# Statistics

**Statistics and Probability**

Let Y be the discrete random variable with probability function p(y) = (1/2)^(y+1) y = 0, 1, 2,... Find the moment-generating function m(t) for Y.

**Statistics and Probability**

Teams A and B play a series of games with the first team to win 4 games being declared the winner of the series. Suppose that team A independently wins each game with probability 0.6. Find the probability that team A wins the series.

**Statistics and Probability**

Teams A and B play a series of games with the first team to win 4 games being declared the winner of the series. Suppose team A independently wins each game with probability 0.6. Find the probability that team A wins the series.

**Statistics**

consider b1=100 and b0=5, this gives us the estimated regression equation of y=100x+5 Find the estimated standard deviation of b1 and the corresponding t-statistic. a.)At the 1% level of significance, can you reject the null hypothesis? Make sure you state the null and ...

**Statistics**

Teen Communication The following data represent the number of different communication activities (e.g., cell phone, text messaging, e-mail, Internet, and so on) used by a random sample of teenagers over the past 24 hours. (a) Are the events “male” and “0 activities” ...

**Statistics Math**

. Drawing a Card Suppose that a single card is selected from a standard 52-card deck. What is the probability that the card drawn is a club? Now suppose that a single card is drawn from a standard 52-card deck, but we are told that the card is black. What is the probability ...

**Statistics**

. According to the U.S. Census Bureau, the probability that a randomly selected head of household in the United States earns more than $100,000 per year is 0.202. The probability that a randomly selected head of household in the United States earns more than $100,000 per year...

**Statistics**

Suppose that suppose that e and f are two events and that p(e)=0.8 and p(f/e)=0.4. what is p(e and f)?

**Math**

a. Do some research and find a city that has experienced population growth. Determine its population on January 1st of a certain year. Write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a period of exponential...

**Math Statistics**

Lottery: I buy one of 250 raffle tickets for $5. The sponsors then randomly select 1 grand prize worth $250, 2 second prizes worth $100 each, and 3 third prizes worth $50 each. Below is the discrete probability distribution for this raffle. Prize P(x) Grand 1/250 Second 2/250 ...

**Statistics**

A. In a given normal distribution, the sample mean is 75 and the sample standard deviation is 4. Find the corresponding standard score of the following values: 1. 69 2. 85 3. 70 4. 65 B. In a given normal distribution, the population standard deviation is 2.5. Find the ...

**Statistics**

(GRAPH) Sketch a normal curve that has a mean of 15 and a standard deviation of 4. On the same x-axis, sketch another normal curve that has a mean of 25 and a standard deviation of 4. Describe the two normal curves.

**Statistics**

Find the area under the normal curve in each of the following cases. 1. Between z = 0 and z = 1.63 2. Between z = 1.56 and = 2.51 3. Between z = -0.76 and z =1.35 4. Between z= -0.26 and z = -1.76 5. To the left of z = 2.35 6 To the right of z = -1.31 7. To the left of z = 0....

**Statistics for sociology**

We have a random sample of 594 Canadian adults. We have collected data on their behaviour surrounding alcohol consumption, specifically the number of drinks consumed per week on average. We found that the mean for this group is 5.5 drinks per week with a standard deviation of ...

**Statistics**

The Random Variable X is normally distributed with mean 560 and standard deviation 20. Find P(X<530) which I calculated as 0.0668. However... It is known that p(|X-560|<a) Find the value of a

**statistics**

H0 is p = 0.45 and H1 is p ≠ 0.45. What type of test will be performed? A. Two-tail testing of a proportion B. One-tail testing of a proportion C. One-tail testing of a mean D. Two-tail testing of a mean ** I'm stuck between A & D. I chose those because two-...

**statistics**

Determine which of the following four population size and sample size combinations would not require the use of the finite population correction factor in calculating the standard error. A. N = 1500; n = 300 B. N = 2500; n = 75 C. N = 15,000; n = 1,000 D. N = 150; n = 25 I ...

**Statistics**

WHIP DAB IM A PART OF THIS THREAD ḛ̸͔͂̒̿̈̉̋̈́̇̇͛̈͌̊̑̓̽͋́͒̈́̇̾̊̄͂̎̈́̋͛͐̌̏́͋͑͋̓̀̎̀́͗̓̏̆̓̔͂̾̓̿̐́̃̍͆̆̍̈͋͑̇̓̂̐̒͐̀̉̈́̃̃́͗̔̃̌́̃͐͘̕͘͘͘͘͝͝͝͝͝͝...

**CASE STUDY HYPOTHESES**

CASE STUDY HPOTHESES? Is it logically inconsistent to use statistics to illustrate white privilege, but not to support racial profiling? What can the legal evidence collection process learn from the strength and weaknesses of the ethnographic research method? What can ...

**Research Questions on Racial Profilig?**

My assignment is to write a case study, I plan on writing about racial profiling. Are these questions workable? 1. What can the legal evidence collection process learn from the strength and weaknesses of the ethnographic research method? What can ethnographers learn from the ...

**History**

1What did inventors Eli Whitney and Francis Cabot Lowell have in common? Both of their inventions contributed to the rise of the U.S. textile industry. They both invented machines related to railways. They both moved from Britain to the United States. They were both very young...

**statistics**

You have been asked to do a survey of student satisfaction with MyMathLab courses at South University. Describe how you would obtain a sample of these types: stratified and simple random

**statistics**

A cereal manufacturer seeks to test their newest product against a competitor’s. A group of 100 children was asked to evaluate each brand, and then to express a preference. To guard against bias, neither the children, nor the technicians serving them, were aware of the order...

**Statistics**

Which Professor? Suppose Professor Alpha and Professor Omega each teach Introductory Biology. You need to Decide which professor to take the class from and have just completed your introductory statistics course. Records obtained from the past students indicated that students ...

**Statistics**

Find the range population of Ethan and the population standard deviation Ethan: 9, 24, 8, 9, 5, 8, 9, 10, 8, 10

**Statistics**

The normality of NaOH obtained was 0.0172, 0.0187, 0.0185, 0.189, and 0.0183 N. The theoretical normality of NaOH was 0.02 N. Please calculate: 1) Standard deviation based on the true mean: 2) Standard deviation based on the experimental mean: SD 3) Coefficient of variation (...

**Probability & Statistics**

Space shuttle astronauts each consume an average of 3000 calories per day. One meal normally consists of a main dish, a vegetable dish, and two different desserts. The astronauts can choose from 11 main dishes, 7 vegetable dishes, and 12 desserts. How many ...

**Statistics**

I'm trying to figure out which type of factorial ANOVA test to use for this data. The data is from a hypothetical study looking at whether males or females are more likely to ask questions during a seminar where people give various presentations. The dependent variable is "...

**Statistics**

Question 1 - Use the dataset InkjetPrinters.txt to answer the following questions: Data was collected on a sample of 20 different consumer inkjet printers. The dataset contains 5 different properties: Variable Description Printing rate (PPM) Printing rate (pages per minute) ...

**Statistics**

Volunteers for a human performance study were randomly divided into two groups. The first group had their flexibility measured in the morning after a short meditation session while the second group had their flexibility measured in the afternoon with no previous meditation ...

**Probability and statistics**

For a single roll of two dice, are rolling a sum of 6 and rolling doubles independent events? Explain.

**English**

17. For most academic writing, the types of evidence preferred include A. a combination of assertions and first-hand experiences. B. personal observations and opinions. C. facts, statistics, and expert testimony. D. general statements and quotations by well-known individuals...

**Statistics**

Graph neatly and label all intercepts. -x+2y=5 x intercept x=0 -0+2y=5 +0 +0 -------- 2y/2=5/2 y=5/2 y intercept y=0 -x+2(0)=5 -x+0=5 -x-0=5 x=-5

**Statistics**

1. The following sample data shows the use of plastic (debit and credit) cards versus cash/cheque by four age groups: Age Group 18-24, 25-34, 35-44, 45 and over Payment Method plastic 21, 27, 27, 36 cash or cheque 21, 36, 42, 90 Test for independence between method of payment ...

**Statistics**

For the given pair of events A and B, complete parts (a) and (b) below. A: When a page is randomly selected and ripped from a 2121-page document and destroyed, it is page 1515. B: When a different page is randomly selected and ripped from the ...

**Statistics**

A certain player makes a successful first serve 80% of the time. Assume that everything is independent. The propbability that she gets at least 4 serves in is_____? and that she gets no more than 3 serves in is_____?

**math - statistics**

There has been a rise in supermarket-owned brands in Australia. These are commonly available in supermarkets such as Woolworths, Coles and Aldi. It has been said that these brands account for almost one-quarter of all grocery sales. It has also been claimed that the quality of...

**Statistics**

A 2014 Gallup Poll of 1028 adults found that 216 thought abortion should be illegal in all circumstances, a decrease of 2 percentage points from the record high in 2009. We are 95% confident that between ___% and ___% of all adults thought abortion should be illegal in all ...

**Statistics**

A 2014 Gallup Poll of 1028 adults found that 216 thought abortion should be illegal in all circumstances, a decrease of 2 percentage points from the record high in 2009. We are 95% confident that between ___% and ___% of all adults thought abortion should be illegal in all ...

**Statistics**

H(o): u=10 H(o): u>10 (sigma)=2 n=25 In your research, you will fail to reject the null hypothesis if your sample average is less than 10.82 a) What is the probability of making a Type II Error if the true value of "u" is 10.26? b) What is the power of this test? Thank you!

**Statistics**

In a village with a population of 1500,the probability of a person falling sick is 0.002. Find the probability that a)3people fall sick in a week b)less than 3 fall sick in a week c)at most 3 fall sick in a week d)more than 2 fall sick in a week

**Statistics and Probability**

A box contains 4 red and 5 blue marbles. Michele picks three marbles at random from this box. If Z is a random variable representing the # of blue marbles picked from the box, do the following. a. Express the probability mass function of Z in tabular form. b. Draw the ...

**statistics**

When a parachute is inspected, the inspector is looking for anything that might indicate the parachute might not open. - State the null and alternative hypotheses for this situation.

**statistics**

If the critical values of a hypothesis test are +2.58 and -2.58, what would be the critical regions?

**statistics**

if you counted 20 colonies from 0.01-ml inoculum of a 1:10 diulation of urine, how many organisms per milliliter of speciman would you report? Is this number significant

**Consumer Math**

Weights of the vegetables in a field are normally distributed. From a sample Carl Cornfield determines the mean weight of a box of vegetables to be 180 oz. with a standard deviation of 8 oz. He wonders what percent of the vegetable boxes he has grouped for sale will have a ...

**statistics**

The Maximum Error of Estimate is exactly equal to half of the width of the confidence interval. T-F, and why or why not?

**MC science history**

Which of the following is not considered part of the "golden age" of microbiology? A.First artificial vaccine is developed B.Gram stain is devised C, Viruses are defined D.all of the above Who determined Archaea are the third domain of life? A.Carl Woese B.Winogradsky C.Kary ...

**Statistics**

A committe of 5 members will be chosen from a group of 10 teachers and 5 students. What is the probability that the committee will have A) all teachers? B) 3 teachers and 2 students? C) 3 or 4 teachers?

**statistics / probability**

A cooler full of sodas has 12 lemon-lime drinks and 18 gingerales. If one drink is selected at random and then a second drink is selected at random, what are the chances that both sodas will be gingerales?

**Statistics**

A committe of 5 members will be chosen from a group of 10 teachers and 5 students. What is the probability that the committee will have A) all teachers? B) 3 teachers and 2 students? C) 3 or 4 teachers?

**AP Statistics**

I was sick and when I came back to school I received this question as homework and I don't understand it... Jenny is a 60 percent free-throw shooter She gets to shoot a second free throw if and only if she makes her first shot. She can score 0 points( if she misses her first ...

**statistics**

⦁ Find the probability that a data value picked at random from a normal population will have a standard score (z) that lies between the following pairs of z-values. ⦁ z = 0 to z = 2.10 ⦁ X

**statistics**

Please help. I have no idea what I am doing Use the standard normal (z score) table to find: P(-1.00 ≤ z) & Find the probability that a data value picked at random from a normal population will have a standard score (z) that lies between the following pairs of z-values. z = ...

**statistics**

A box contains 10 items, of which 3 are defective and 7 are non-defective. Two items are randomly selected, one at a time, with replacement, and x is the number of defectives in the sample of two. Explain why x is a binomial random variable. & For the first question about the ...

**statistics**

A box contains 10 items, of which 3 are defective and 7 are non-defective. Two items are randomly selected, one at a time, with replacement, and x is the number of defectives in the sample of two. Explain why x is a binomial random variable

**Math**

A repeated-measures study and an independent-measures study both produce t statistics with df = 20. The independent-measures study used more participants. True or False

**statistics**

You have been asked to do a survey of student satisfaction with MyMathLab courses at South University. Describe how you would obtain a sample of these types: stratified and simple random.

**statistics**

Please help. I have no idea how to do thisA cereal manufacturer seeks to test their newest product against a competitor’s. A group of 100 children was asked to evaluate each brand, and then to express a preference. To guard against bias, neither the children, nor the ...

**Statistics**

The yearly rainfall in Vancouver, B.C. follows a normal distribution with standard deviation 172 mm. In 20% of years, the city gets over 1200 mm of rain. What is the mean annual rainfall in Vancouver (in mm)? The answer is 1055.5 mm....not sure how to get this answer.

**Statistics and probability**

A science class has four girls and four boys in the seventh grade and three girls and five boys in the eighth grade the teacher randomly selects a seventh grader and an eighth grader from the class for competition what is the probability that the student she selects are both boys

**statistics**

The distribution of grades of 50 students in a certain subject is normally distributed with a mean of 86 and a standard deviation of 12. 6. 7. If the passing grade is 75, how many failed in the subject?

**Statistics**

According to a recent survey, 65% of all customers will return to the same grocery store. Suppose 11 customers are selected at random,what is the probability that A) exactly 5 will return? B) all 11 will return? C) at least 6 will return D) at least one will return E) how many...

**Statistics**

According to a recent survey, 65% of all customers will return to the same grocery store. Suppose 11 customers are selected at random,what is the probability that A) exactly 5 will return? B) all 11 will return? C) at least 6 will return D) at least one will return E) how many...

**statistics**

The Middlecreek Branch of the National Bank of Virginia has 10 real estate loans over $1,000,000. Of these 10 loans, 4 are "underwater." A loan is underwater if the amount of the loan is greater than the value of the property. The chief loan officer decided to randomly slect ...

**Statistics**

The class average on the quarterly exam was65% with a standard deviation of 7%. Is the probability that a student got 70% or higher 24%

**Probability and Statistics**

In a population where 85% prefer Candidate A, an organization conducts a poll of 19 voters. Find the probability that 17 of the 19 voters will prefer Candidate A.

**Probability and Statistics**

A high school baseball player has a 0.193 batting average. In one game, he gets 7 at bats. What is the probability he will get at least 2 hits in the game?

**Probability and Statistics**

If a seed is planted, it has a 95% chance of growing into a healthy plant. If 6 seeds are planted, what is the probability that exactly 4 don't grow?

**Probability and Statistics**

According to Masterfoods, the company that manufactures M&M’s, 12% of peanut M&M’s are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. You randomly select peanut M&M’s from an extra-large bag looking for an orange candy. (Round all ...

**Statistics**

The mean score on a test was 280 and the standard deviation was 20. You want to pick the top 15%. What will be the minimum cutoff score to be in the top 15%?

**Statistics**

Assuming that the probability of male birth is 0.5,find the probability that in the family of 4 children there will be A. 1 boy B. 2 boys C. At least a boy

**Statistics**

Consider the probability that fewer than 17 out of 145 people will get the flu this winter. Assume the probability that a given person will get he flu this winter is 11%. Approximate the probability using the normal distribution. Round the answer to four decimal places.

**probability and statistics**

Roll a fair six-sided die until you roll a number that is less than one of your previous rolls. To three decimal places, what is the expected value of the number of rolls made?

**English/Grammar Tutor Please !!!!!!!!!**

As the public uproar over generic drug and off-patent, off-exclusivity branded drug price gouging heightens, state experts and patient activists in Maryland are lobbying for politicians to implement a law that would prohibit price gouging of important off-patent non-brand ...

**statistics**

1. The manager of a large factory believes that the average hourly wage of the employees is below $9.78 per hour. A sample of 18 employees has a mean hourly wage of $9.60. The standard deviation of all salaries is $1.42. Assume the variable is normally distributed. At = 0....

**math**

A medical researcher wants to determine whether male pulse rates vary more or less than female pulse rates. Using the sample pulse rates in Data Set 1 in Appendix B, the male pulse rates can be summarized with the statistics 40=n,69.4=x,11.3=s. For females, the statistics are,...

**Statistics**

Sickle cell disease is an inherited blood disorder that affects red blood cells. Since it is a recessive disorder, a person inheriting two sickle cell genes will have the disease, whereas a person inheriting only one sickle cell gene will be healthy, but will carry the sickle ...

**statistics**

Is Independent variable Depression categorical nominal or ordinal or continuous variables (interval or ratio) Answer: ordinal Is Independent variable College Life(academic and social) nominal or ordinal or continuous variables (interval or ratio)? Answer: Ordinal Is Dependent ...

**Statistics**

I don't understand this at all.. Assume that the weights of Chinook Salmon in the Columbia River are normally distributed. You randomly catch and weigh 40 such salmon. The mean weight from your sample is 24.1 pounds with a standard deviation of 3.5 pounds. Test the claim that ...

**statistics**

In the case of Castaneda vs Partida, it was noted that although 80% of the population in a Texas county was Mexican-American, only 39% of those summoned for grand juries were Mexican-American. Assume that 12 jurors are to be summoned from a population that 80% Mexican-American...

**statistics**

In a game of dice, the probability of rolling a 12 is 1/36. The probability of rolling a 9, 10, or 11 is 9/36. The probability of rolling any other number is 26/36. If the player rolls a 12, the player wins $5. If the player rolls a 9, 10, or 11, the player wins $1. Otherwise...

**statistics**

A hotel operates a shuttle bus between the hotel and the airport. The maximum capacity of the hotel’s minivan is 10 passengers. On each trip from the airport, the manager of the hotel conducts the experiment of noting the number of people in the minivan.a) What is an ...

**education tecnology**

1)what is a database: A)a group of information in slides B)a digital collection of information that can be sorted , organized , and analyzed C)a cart that is displays data from several fields D) a group of records about one person 2)for which of the following can a data base ...

**Statistics**

In the case of Castaneda vs Partida, it was noted that although 80% of the population in a Texas county was Mexican-American, only 39% of those summoned for grand juries were Mexican-American. Assume that 12 jurors are to be summoned from a population that 80% Mexican-...

**Statistics**

In a game of dice, the probability of rolling a 12 is 1/36. The probability of rolling a 9, 10, or 11 is 9/36. The probability of rolling any other number is 26/36. If the player rolls a 12, the player wins $5. If the player rolls a 9, 10, or 11, the player wins $1. Otherwise...

**Statistics**

A hotel operates a shuttle bus between the hotel and the airport. The maximum capacity of the hotel’s minivan is 10 passengers. On each trip from the airport, the manager of the hotel conducts the experiment of noting the number of people in the minivan.a) What is an ...

**Statistics**

From five faculty members and four students, a committee of four is to be chosen that includes two students and two faculty members. In how many ways can this be done? Please show more than one approach.

**Statistics**

A math department is allowed to tenure 4 of 17 eligible instructors. In how many ways can the selection for tenure be made? Please show more than one approach.

**Statistics**

A robber has stolen a locked briefcase. The lock on the briefcase can be opened with a three-digit code, where each digit is one of the digits from 0 to 5.a) How many codes are possible if each digit may be used more than once?b) How many codes are possible if each digit may ...

**Statistics**

There are 4 daily flights from Palooka to Wichita and 6 daily flights from Wichita to Kalamazoo. How many different ways are there to fly from Palooka to Wichita one day, and then to Kalamazoo the following day? Please show more than one approach.

**English**

"The number of souls in Ireland being usually reckoned one million and a half, of these I calculate there may be about two hundred thousand couples whose wives are breeders, from which number I subtract thirty thousand couples, who are able to maintain their own children..." ...

**Math**

According to the National Center for Health Statistics, the mean height of an American male is 69.3 inches and the mean height of an American female is 63.8 inches. The standard deviation for both genders is 2.7 inches. According to Chebyshev’s Theorem 75% of the data for ...

**statistics**

In 2000, National data suggested that 26% of all U.S. businesses were owned by women. In 2009, a consulting firm surveyed a random sample of 700 U.S. businesses and found that 28% of them were owned by women. Is this evidence of an increase in the percentage of businesses that...

**Statistics**

there is good evidence that moderate alcohol use improves health. some people think that red wine is better for your health than other alcoholic drinks. you have recruited 300 adults aged 45-65 who are willing to follow your orders about alcohol consumption over the next 5 ...

**Statistics**

A gambling game works as follows: you flip a fair coin and roll a fair six-sided die. You will be paid $2 if you roll a 6 and $1 if you get a head and an odd number of spots. Otherwise, you have to pay $2.50. a) What is the probability of rolling a die greater than 1? b) What ...

**Statistics**

Suppose the weights of Farmer Carl's potatoes are normally distributed with a mean of 7.9 ounces and a standard deviation of 1.1 ounces. Suppose Carl bags his potatoes in randomly selected groups of 6. What percentage of these bags should have a mean potato weight between 7.5 ...

**Statistics**

Suppose the weights of Farmer Carl's potatoes are normally distributed with a mean of 8.0 ounces and a standard deviation of 1.2 ounces. (a) If 4 potatoes are randomly selected, find the probability that the mean weight is less than 9.8 ounces. (b) If 8 potatoes are randomly ...

**Statistics**

Assume the weights of Farmer Carl's potatoes are normally distributed with a mean of 7.0 ounces and a standard deviation of 1.3 ounces. He bags his potatoes in groups of 6. You buy a bag and the total weight is 36 ounces. Here we determine how lucky or unlucky you are. (a) ...

**statistics**

I have a Cronbach alpha .386 this is considered to be unacceptable