Wednesday

June 29, 2016
**Statistics**

Suppose you have a sample of 6 observations from a normal population. The sample variance is equal to 4. Find a 90% lower confidence interval for the variance of the population.
*Saturday, July 11, 2015 by Chase*

**statistics**

u=100 and standard deviation of P=20. error between sample mean and population mean of n=16 is 5 points and error between sample mean and population mean for a sample of n=100 is 2 points. explain
*Thursday, July 9, 2015 by Anonymous*

**Statistics**

Police stopped 527 drivers. Of those stopped, 298 were ticketed. Of those 298, exactly 127 were cited for more than one violation. Estimate the probability that a driver who was stopped got a ticket. Which way is the correct one? 1/527=.0018 or 1/298=.003 Or am I way off?
*Thursday, July 9, 2015 by Kim*

**Statistics**

If 67% of cars have automatic tranny's & 8 cars are selected at random what is the probability that fewer than 4 have an automatic tranny
*Wednesday, July 8, 2015 by Kim*

**statistics**

Unknown to a quality-control inspector, 20% of a very large shipment of electric switches are defective. The inspector has been told to reject the shipment if, in a sample of 15 switches, 2 or more are defective. The probability that the shipment will be rejected is: I do not ...
*Tuesday, July 7, 2015 by helpmeplease*

**statistics**

Average is 8500 with a standard deviation. Of 1500 with a z score of -2.98 a z score of +1.00 what are the actual bonuses
*Tuesday, July 7, 2015 by Anonymous*

**statistics**

If I am using a venn diagram, the probability that event A occurs or event B occurs but not both. What is my formula? I am soooo very confused..
*Tuesday, July 7, 2015 by cat*

**statistics**

Joe owns a clothing store, he keeps 15% of the shirts on display in the window. he knows if a shirt is in the window there is a 70% chance of it being sold that week. The probability that the shirt in the display window will be sold within the week is????? and is this an ...
*Tuesday, July 7, 2015 by cat*

**Math statistics **

A mountain search and rescue team received an average of 600 calls per year. Use the poisson dustribution to find the probability that on a randomly selected day, they will receive 1 or more calls.
*Tuesday, July 7, 2015 by Lizzy*

**Math statistics **

Ten percent of Americans adults are left-handed. A statistics class has 50 students in attendance. Find the standard deviation for the number of left-handed students in such classes of 50 students
*Tuesday, July 7, 2015 by Lizzy*

**Math statistics **

For a certain computer program a password must be exactly 5 characters long. The first character must be a mnber 0-8, the second, third and fourth character can either be one of the 26 letters or a number 0-5, the fifth character has to be exactly the same as the second ...
*Tuesday, July 7, 2015 by Lizzy*

**Math Statistics **

In the power ball lottery game, winning the jackpot requires that you select the correct five unique numbers between 1 and 58 inclusive (don't have to match the order) and, in a separate drawing, you must also select the correct single nber between 1 and 13 inclusive. Find...
*Tuesday, July 7, 2015 by Lizzy*

**statistics **

TRUE OR FALSE 35. A survey of women owned business found that approximately 30% of all small businesses are owned by non‐Hispanic white women. In a sample of 250 non‐Hispanic businesses owned by whites, the average number of businesses owned by female would be 75. ...
*Monday, July 6, 2015 by meri*

**statistics **

The US Environmental Protection Agency reports the average fuel costs for various makes of cars. In recent years the fuel costs for mid‐size Japanese cars averaged $1200. Suppose that the annual fuel costs for various makes of automobiles are normally distributed and ...
*Monday, July 6, 2015 by meri*

**statistics **

15. A financial consultant conducts seminars with each seminar limited to 20 attendees. Because of the small size of the seminar, and the personal attention each person receives, a large number of attendees are expected to become clients. From the past experience, ...
*Monday, July 6, 2015 by meri*

**statistics **

11. You are taking a multiple choice examination that has 20 questions in a particular section with 5 possible answers for each question. You did not study for the test and you guessed the answers. The probability that you will get at least 50% of the problems correct by ...
*Monday, July 6, 2015 by meri*

**statistics **

7. The following statements are true for a binomial distribution except: (a) Binomial is a continuous probability distribution. (b) There are n number of trials. (c) There are two possible outcomes for each trial: Success (S) and Failure (F). (d) The trials are independent of ...
*Monday, July 6, 2015 by meri*

**Statistics **

The probability distribution of number of calls coming to a call center every 15 minute period is shown below. x 5 6 7 8 9 10 11 12 13 p ( x ) 0.02 0.04 0.07 0.08 0.09 0.11 0.12 0.13 0.10 Continued… x 14 15 16 17 18 19 20 p ( x ) 0.07 0.06 0.04 0.03 0.02 0.01 0.01 1. This...
*Monday, July 6, 2015 by meri*

**statistics**

the probability of NOT drawing either a club or a queen from a standard deck of 52 cards is???
*Sunday, July 5, 2015 by cat*

**Statistics**

Please Help me understand how to work this problem. I have been working on this problem for several days and do not understand what to do. Suppose IQ scores were obtained from randomly selected twins. For 20 such pairs, of people the linear correlation coefficient is 0.922 and...
*Saturday, July 4, 2015 by Shannon*

**statistics /pure maths**

A box contains N identical balls of which 4 are Red, 3 are Green and the rest are White . If 3 balls are drawn at random one after the other without replacement.the probability that all 3 balls are Whit is 1/22. 1.Find the number of identical balls in the container . 2.Find ...
*Thursday, July 2, 2015 by gbafa*

**Statistics**

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 1264 chips and a standard deviation of 116 chips. (a) Determine the 28th percentile for the number of chocolate chips in a bag. (b) Determine the number of ...
*Tuesday, June 30, 2015 by Amanda*

**Statistics**

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 1264 chips and a standard deviation of 116 chips. (a) Determine the 28th percentile for the number of chocolate chips in a bag. (b) Determine the number of ...
*Tuesday, June 30, 2015 by Amanda*

**Statistics**

How would you do this problem The following is a list of ten measurements: 35,36,-38,-18,73,9,0.-67,-64,-59 10 over Sum under that is i=1 then sum-33xi how do I find the answer
*Tuesday, June 30, 2015 by Mary Ann K*

**statistics**

How do I find the probability of an event A occurring or an event B occurring but not both? How do find this equation with a Venn diagram?
*Tuesday, June 30, 2015 by cat*

**statistics**

what is the equation to figure a slope of a line?
*Tuesday, June 30, 2015 by Anonymous*

**statistics**

Jesse took two data points from the weight and feed cost data set and calculated a slope, or average rate of change. A rat weighs 3.5 pounds and costs $4.50 per week to feed, while a Beagle weighs 30 pounds and costs $9.20 per week to feed. Using weight as the explanatory ...
*Tuesday, June 30, 2015 by Anonymous*

**statistics **

34. Two students (say A, and B) are challenged to solve a problem in statistics. Suppose that the probability that A will solve the problem is 40%, the probability that B will solve the problem is 55%, and the probability that A or B will solve the problem is 25%. The ...
*Tuesday, June 30, 2015 by meri*

**statistics **

Let, the Sample space, S={1,2,3,4,5,6,7, 8} A={1,3,5,7} B={1,3,4,6,7,8} C={1,7,8} 31. The intersection of A and B is: (a) A B {1,3,7} (b) A B {1,3,7,8} (c) A B {1,3} (d) A B {1,3,6,7} 32. The value of A...
*Tuesday, June 30, 2015 by meri*

**statistics **

30. The probability that a person can get infected with a rare type of blood disorder is very small. Suppose that a blood test performed on 10,000 people showed that two persons tested positive that is, a 0.02% chance of getting this type of blood disorder. This probability ...
*Tuesday, June 30, 2015 by meri*

**statistics **

28. From a group consisting of 8 married couples, one man and one woman are to be selected. The probability that the man and woman selected are husband and wife if the selection is equally likely is (a) 5% (b) 50% (c) 12.5% (d) 8.5% 29. A survey at a big mall in a city showed ...
*Tuesday, June 30, 2015 by meri*

**statistics **

26. The law of permutations, combinations, and filling slots are the counting rules used to (a) determine the total number of possible outcomes (b) determine all possible combinations of “n” objects from a total of N objects (c) determine the odds of winning a ...
*Tuesday, June 30, 2015 by meri*

**statistics **

24. Suppose there are five traffic lights that you need to pass while driving from your work to school. The probabilities that you will stop for these red lights are: 0 red light with probability 0.05, 1 red light with probability 0.45, 2 red lights with probability 0.30, 3 ...
*Tuesday, June 30, 2015 by meri*

**statistics **

22. A company is planning to expand its operations. They are currently considering 9 different locations. Two of these are in Ohio. If the locations are selected at random from the 9 locations being considered, the probability of selecting the two sites in Ohio is (a) 0.056 (b...
*Tuesday, June 30, 2015 by meri*

**statistics **

20. A company must select 3 employees from a department that has a total of 5 employees to attend a workshop in quality management. The number of possible selections are (a) 15. (b) 60. (c) 10. (d) 20. 21. From a group of 5 men and 4 women, a committee is to be formed ...
*Tuesday, June 30, 2015 by meri*

**statistics **

17. All three‐digit numbers that can be formed using the digits 1, 2, 3, 4, and 5 without repeating the digits are (a) 50. (b) 60. (c) 15. (d) 71. 18. One of the counting rules used to determine the total number of possible outcomes for experiments in which the order of ...
*Tuesday, June 30, 2015 by meri*

**statistics **

15. The probability that a recently offered stock by a technology company will double in value within the next three months is 90%. The conclusion regarding this probability estimate was reached based on the opinion of the experts in the technology field to which this stock ...
*Tuesday, June 30, 2015 by meri*

**statistics **

12. The probability that the Dow Jones stock index will close above 18000 at the end of the year is an example of (a) classical probability. (b) subjective probability. (c) independent probability. (d) priory probability. 13. The probability calculated based on observing a ...
*Tuesday, June 30, 2015 by meri*

**Statistics **

10. Five cards are drawn from a well shuffled pack of 52 playing cards. It can be shown that (disregarding the order in which the cards are dealt) there are 2,598,960 possible fivecard hands, of which only 1287 are hands consisting entirely of spades. What is the probability ...
*Tuesday, June 30, 2015 by meri*

**statistics **

8. A survey was conducted to learn about the shopping preference of consumers during the holiday season. Out of 2000 respondents 22% said they would prefer to shop online because of the free shipping offered; 45% said that they would like to shop in malls and discount outlets ...
*Tuesday, June 30, 2015 by meri*

**statistics **

5. Consider the probabilities in problem 4. The probability that a randomly selected single book purchase will not be for a work of fiction is (a) 0.80 (b) 0.25 (c) 0.20 (d) 0.30 (e) 0.75 6. Two dice are rolled. Suppose A is the event the sum of the numbers on the top faces is...
*Tuesday, June 30, 2015 by meri*

**Statistics **

3. A bookstore sells two types of books (fiction and nonfiction) in several formats (hardcover, paperback, digital, and audio). Consider an experiment that consists of observing the type and format of a single book purchase, two possible outcomes are a hardcover fiction book ...
*Tuesday, June 30, 2015 by meri*

**Statistics **

1. Consider an experiment that consists of rolling a pair of dice. There are 36 possible outcomes for this experiment which are equally likely. What is the probability of getting a total of 3 or 5 for this experiment? (a) 1 /3 (b) 20/36 (c) 1/36 (d) 1/6 (e) 1/2 2. A car dealer...
*Tuesday, June 30, 2015 by meri*

**business statistics**

using empirical formula a company is studying the number of daily debit card purchases. THere were 20 purchases and the probability of a debit card purchase is 0.5. what is the stadnard deviation of the number of debit card purchases
*Monday, June 29, 2015 by Anonymous*

**Maths statistics**

In a 60 MA Economics students selected as sample are found to have a mean height of 68 inches and a 50 MBS students selected as sample have a mean height of 69 inches. Would you conclude that management students are taller than economics students? Assume that standard ...
*Sunday, June 28, 2015 by Kiran*

**statistics**

Go to a local library; collect a sample of books consisting of the ages of book (based on copyright dates). Plan and describe the sampling procedure, then use the results to construct a confidence interval estimate of the mean age of all books in the library. Please, post and ...
*Friday, June 26, 2015 by jen*

**Math - Statistics**

The proportion of red M&M's made is 0.24. Suppose one took a random sample of 51 M&M's. (a) What is the probability that an SRS of 51 M&M's has as its proportion of red M&M's 0.23 or below? (b) Find the 80th percentile for sample proportions of red M&M's in...
*Thursday, June 25, 2015 by Samantha*

**statistics**

Jesse took two data points from the weight and feed cost data set and calculated a slope, or average rate of change. A rat weighs 3.5 pounds and costs $4.50 per week to feed, while a Beagle weighs 30 pounds and costs $9.20 per week to feed. Using weight as the explanatory ...
*Wednesday, June 24, 2015 by cat*

**statistics**

Jesse put the heartbeat and lifespan data into a statistical software program and found the coefficient of determination to be 64%. The value of the correlation coefficient is __________.
*Wednesday, June 24, 2015 by cat*

**statistics**

Using the regression equation ŷ = .3 + .12x, the predicted weekly food cost for a hedgehog weighing 1.3 pounds is __________.
*Wednesday, June 24, 2015 by cat*

**Statistics**

Answer “True” if the statement is always true. If the statement is not always true, replace the underlined words with words that make the statement always true. Alpha is the measure of the area under the curve of the standard score that lies in the rejection region ...
*Tuesday, June 23, 2015 by shuggins*

**statistics**

A study of 600 college students taking statistics revealed that 54 students received the grade of A. Typically 10% of the class gets an A. The difference between this gourp of students and the expected value is not significant at the 0.05 level. What does this mean?
*Tuesday, June 23, 2015 by mary*

**Statistics**

brewery's filling machine is adjusted to fill bottles with a mean of 33.8 oz. of ale and a variance of 0.004. Periodically, a bottle is checked and the amount of ale noted. (a) Assuming the amount of fill is normally distributed, what is the probability that the next ...
*Saturday, June 20, 2015 by Nick*

**statistics**

The instructor’s sample produces a mean number of days absent of 3.5 days. This value is an example of a:
*Saturday, June 20, 2015 by Patty*

**Statistics**

Regression analysis was applied between sales data (in $1,000s) and advertising data (in $100s) and the following information was obtained. ~ y = 12 + 1.8x n = 17 SSR = 225 SSE = 75 sb1 = 0.2683 Refer to Exhibit 12-3. The critical F value at a = 0.05 is a. 3.59 b. 3.68 c. 4.45...
*Friday, June 19, 2015 by Yazzy*

**Math - Statistics**

The increase or decrease in the price of a stock between the beginning and the end of a trading day is assumed to be an equally likely random event. What is the probability that a stock will show a decrease in its closing price on eleven consecutive days? (Round to four ...
*Friday, June 19, 2015 by Derrin*

**Statistics**

How do you find the p-value??? Thanks! In the past, 35% of the students at ABC University were in the Business College, 35% of the students were in the Liberal Arts College, and 30% of the students were in the Education College. To see whether or not the proportions have ...
*Friday, June 19, 2015 by Becca*

**statistics**

P( 1.05 < Z < 2.05) Need help solving please
*Thursday, June 18, 2015 by belle*

**Statistics **

A researcher conducts a test on the effectiveness of a cholesterol treatment on 114 total subjects. Assuming the tails of distributions are normal distribution, is there evidence that the treatment is effective? What is the Null and alternative hypothesis.
*Thursday, June 18, 2015 by James*

**Statistics**

X 0 1 2 3 4 5 6 7 8 P(x) 0.05 0.1 0.3 0.1 0.1 0.1 0.1 0.1 0.05 =As the manager you check the cashier ( to see if you need to open a new cashier line). What is the probability that you find exactly 2 people waiting in line? please need to know how to solve it
*Wednesday, June 17, 2015 by Larry*

**statistics**

a private opinion poll is conducted for a politician to determine why proportion of the population favors decriminalizing marijuana possession. how large a sample is needed in order to be 90 percent confident that the sample proportion will not differ from the true proportion ...
*Monday, June 15, 2015 by ash*

**statistics**

twelve different vTideo games showing substance use were observed and the duration times of game play (in seconds) are listed below. The design of the study justifies the assumption that the sample can be treated as a simple random sample. Use the sample data to construct a 95...
*Monday, June 15, 2015 by melissa jones*

**Statistics **

A random sample of 100 cable TV movies contained an average of 3.38 acts of physical violence per program. At the 99% level what is your estimate of the population value? mean = 3.38 s = 0.30 N = 100
*Sunday, June 14, 2015 by Christina *

**Statistics**

A researcher measures how positive a person’s mood is and how creative he or she is, obtaining the following interval scores: Participant Mood X Creativity Y 1 10 7 2 8 6 3 9 11 4 6 4 5 5 5 6 3 7 7 7 4 8 2 5 9 4 6 10 1 4 (a) Compute the statistic that summarizes this ...
*Saturday, June 13, 2015 by baegirl*

**Statistics**

A researcher finds that the correlation between variable A and variable B is r = 1.20. She also finds that the correlation between variable C and variable B is r = 2.40. Which relationship is scientifically more useful and by how much?
*Saturday, June 13, 2015 by baegirl*

**statistics**

what is the r value
*Saturday, June 13, 2015 by tracy*

**Statistics**

Suppose that a SRS of 900 12th-graders has x̅ =148. Based on this sample, a 95% confidence interval for μ is? (σ=35) I tried using x̅ +/- z*(σ/sqrt n), so 148 +/- 1.960(35/sqrt900, but it doesn't work. What am I doing wrong?
*Friday, June 12, 2015 by Ceres*

**sTATISTICS**

Give examples of each of the aforementioned events.
*Friday, June 12, 2015 by Anonymous*

**Statistics**

Please help, thank you!! A researcher measures how positive a person’s mood is and how creative he or she is, obtaining the following interval scores: Participant Mood X Creativity Y 1 10 7 2 8 6 3 9 11 4 6 4 5 5 5 6 3 7 7 7 4 8 2 5 9 4 6 10 1 4 (a) Compute the statistic ...
*Friday, June 12, 2015 by baegirl*

**Statistics**

Please Help, thank you! A researcher measures the following scores for a group of people. The X variable is the number of errors on a math test, and the Y variable is the person’s level of satisfaction with his/her performance. (a) With such ratio scores, what should the ...
*Friday, June 12, 2015 by baegirl*

**Statistics**

A doctor want to estimate the HDL cholesterol of all 20- to 29- year old females. how many subjects are needed to estimate the HDL cholesterol within 3 points with 99% confindence assuming s=15.8 based on earlier studies?
*Friday, June 12, 2015 by Sonya *

**Statistics**

A recruiter estimates that if you are hired to work for her company and you put in a full week at the commissioned sales representative position she is offering, you will make “$525 plus or minus $250, 80% of the time.” She adds, “It all depends on you!” If...
*Thursday, June 11, 2015 by shuggins*

**Statistics**

The total area under the control distribution curve is equal to a probability of what?
*Thursday, June 11, 2015 by John*

**statistics**

In blackjack with one card dealt already? What is the probability it is a Ace, given that it is not a face card?
*Tuesday, June 9, 2015 by cat*

**statistics**

A daily lottery is conducted in which two winning numbers are selected out of 100 numbers. How many different combinations of winning numbers are possible?
*Tuesday, June 9, 2015 by Donna*

**statistics**

If there were fifteen cards left in the deck, and five were diamonds, what is the probability that two cards dealt (without replacement) would both be diamonds?
*Monday, June 8, 2015 by cat*

**Statistics**

A roulette wheel has 38 slots, numbered 0, 00, and 1 to 36. Two slots are green, 18 of the others are red, and 18 are black. a) What is the probability of winning with a bet on red in a single play of roulette? b) You decide to play roulette 4 times, each time betting on red. ...
*Sunday, June 7, 2015 by Luke*

**statistics**

Last year, community hospital had 23652 admissions. of these, 1569 were readmissions. What is the hospital's readmission rate? round to two decimal places.
*Sunday, June 7, 2015 by laverne*

**statistics**

last month, the release of information specialist received 232 requests for information. He was able to answer 176 within thee specified time frame of three working days. What is the rate of compliance in answering requests within the specified time frame? Round to two decimal...
*Sunday, June 7, 2015 by laverne*

**statistics**

The forms used in your coding area cost $100.00 per 1000 forms for the first 2000 and $50 for every 1,000 thereafter If you need to order 5,000 forms what is the total cost?
*Sunday, June 7, 2015 by laverne*

**Statistics**

The HIM coding supervisor agrees to pay a new graduate $13.50 per hour. This is a full-time coding position at 2,080 hours per year. The cost for a full-time employee's fringe benefits is 24 percent of the employee's salary. How much must the supervisor budget for the ...
*Sunday, June 7, 2015 by laverne*

**statistics**

Community health center, a new patient clinic in your town serving only underinsured and uninsured patients, has asked you to help its HIM department get started. Calculate the number of new shelving units needed for a medical record filing system based on eight shelves per ...
*Sunday, June 7, 2015 by laverne*

**HELP!! Statistics!**

The accompanying data table lists measured voltage amounts supplied directly to a family’s home. The power supply company states that it has a target power supply of 120 volts. Using these home voltage amounts, test the claim that the mean is 120 volts. Use a 0.05 ...
*Wednesday, June 3, 2015 by Lynn*

**STATISTICS**

Find the approximate 84th percentile of the pig pregnancy length distribution
*Tuesday, June 2, 2015 by Ashley*

**Math (Statistics)**

Without calculating values of z, tell which of these sample means will have the most extreme standardized score and which will have the least extreme standardized score. 40, 30, 25, 20.
*Sunday, May 31, 2015 by Debbie*

**Statistics**

12.34 Screening job applicants. A company retains a psychologist to assess whether job applicants are suited for assembly-line work. The psychologist classifies applicants as one of A (well suited), B (marginal), or C (not suited). The company is concerned about the event D ...
*Saturday, May 30, 2015 by Mary*

**Statistics **

a new restaurant with 149 seats is being planned. Studies show that 61% of the customers demand a smoke-free area. How many seats should be in the non-smoking are in order to be very sure of having enough seating there?
*Saturday, May 30, 2015 by Nicoleta *

**science**

1. Descriptive statistics are widely used in qualitative research. When establishing if a population is normally distributed explain when the statistics of sample size, mean, mode, median, skewness and kurtosis will guide the researcher to make conclusions of a normal ...
*Saturday, May 30, 2015 by jonathan*

**statistic**

let y1<y2<y3 be the order statistics of random sample of size a distribution f(x)=2x , 0<x<1 show that z1=y1/y3, z2=y2/y3 ,z3=y3 are mutually stochastically independent
*Wednesday, May 27, 2015 by assma*

**Statistics 2023**

Suppose there is a 11.2% probability that a randomly selected person is aged 20 years or older and is also a jogger. In addition there is a 23.8% chance that a person is 20 years or older, female, given that he or she also jogs. What is the probability a randomly selected ...
*Wednesday, May 27, 2015 by Alexander*

**Elementary Statistics**

determine whether the given is a statistics or parameter. 1.) There are 50 capitol states in the US. Answer: Parameter 2.) Among the flights included in the sample of flights in Data set 15 in Appendix B, 21% arrived late. Answer: Statistics
*Tuesday, May 26, 2015 by Mar*

**Statistics**

Tennis Ball Manufacturing: A company manufactures tennis balls. When its tennis balls are dropped onto a concrete surface from a height of 100 inches, the company wants the mean height of a ball’s bounce upward to be 55.5 inches. This average is maintained by periodically...
*Tuesday, May 26, 2015 by Rose*

**Statistics**

The performance of students is given by the following result: 52,74,54,12,47,36,48,84,65,42,15,45,74,36, 47,53,57,32,41 and 58. If the pass mark is 50. What is the probability that a student should score 84?
*Monday, May 25, 2015 by Amidal*

**Statistics**

The interpretation of a test of significance can depend on the sample size and the practical context of the test. Write a short explanation of how sample size can affect the decision about statistical significance and whether or not the result is of any practical significance.
*Saturday, May 23, 2015 by Alex*

**Statistics**

The average mark on an entrance exam was 70%, with a standard deviation of 9.6. In order to be accepted you must get 60% or better. If 800 students wrote the exam how many were accepted?
*Thursday, May 21, 2015 by Sally*

**Statistics**

Mary has a savings account and is earning 10% annual interest compounded semi-annually. If she deposits $2,000 in the account every six months for three years, what will the future value of her account be? How much interest will she have earned?
*Wednesday, May 20, 2015 by Carrie*

**math**

let y1<y2<y3 be the order statistics of random sample of size a distribution f(x)=2x , 0<x<1 show that z1=y1/y3, z2=y2/y3 ,z3=y3 are mutually stochastically independent
*Tuesday, May 19, 2015 by assma*

**Statistics**

Scores on the Scholastic Aptitude Test form a ND with a mean of 500 and SD of 100 what is the minimum score necessary to be in the top 15% of the SAT distribution? Stuck on what to do on this question? Any answers?
*Tuesday, May 19, 2015 by Tom*

**Statistics HELP!**

Use a normal approximation to find the probability of the indicated number of voters. In this case assume that 119 eligible voters aged 18-24 are randomly selected. Suppose a previous study showed that among eligible voters aged 18-24, 22% of them voted. The probability that ...
*Monday, May 18, 2015 by Lynn*

**Healthcare Statistics**

A coding supervisor must determine the number of full time equilvalents (FTEs) needed to code 500 discharges per week. If it takes an average of twenty minutes to code each record and each coder works 7.5 productive hours per day, how many FTEs will the coding supervisor need?
*Monday, May 18, 2015 by Reannon*