Saturday
May 28, 2016

Homework Help: Math: Statistics

Recent Homework Questions About Statistics

statistics
If p(A)=.50, p(B)=.60, and p(A and B)=.30, Are A and B mutually exclusive events? and independent events?
Thursday, February 25, 2016 by Nelly

statistics
if a die is tossed four times what is the probability of getting at least one six
Thursday, February 25, 2016 by Nelly

statistics
if a die is tossed four times what is the probability of getting anything but a five on every toss
Thursday, February 25, 2016 by Nelly

statistics
if a die is tossed four times what is the probability of getting three odd numbers
Thursday, February 25, 2016 by Nelly

statistics
if a die is tossed four times what is the probability of getting one six
Thursday, February 25, 2016 by Nelly

statistics
5 students go to school one of which is known to be late; in fact he is late 22% of the time. What is the probability that he will not be late for school.
Wednesday, February 24, 2016 by Sam

statistics
5 cards are drawn out of a regular deck without replacement; you win if you get at least one red card. What is the probability of getting at least one red card?
Wednesday, February 24, 2016 by Shawn

Statistics
To win one version of the New York State lottery, one must correctly select 5 numbers from 49 numbers. How many different selections are possible if: ~ The order in which the selection is made does not matter? ~ The order of selection does matter?
Wednesday, February 24, 2016 by Ana

statistics
The second moment about mean oftwo distributions are 13.76 and 63.0 while the fourth moment about the men are 528.06 and 9500 respectively which of distribution is 1 leptokuric [2] mesokuric [3] platykurtic
Monday, February 22, 2016 by shumaila

statistics
Minutes 126.53 127.27 130 130.35 130.4 130.58 130.87 131.18 131.98 132.55 133.28 133.42 133.43 133.55 133.65 134 134.37 134.62 134.73 135 135.95 136.12 136.17 136.23 136.28 137.7 137.83 137.93 138.18 138.25 138.43 138.67 139.13 139.72 140.25 140.38 140.4 140.42 140.5 141.27 ...
Sunday, February 21, 2016 by hana

statistics
state whether the quantity described is a parameter or a statistic and give the correct notation. Correlation between height and weight for players on the 2010 Brazil World Cup team, using data from all 23 players on the roster. thanks
Sunday, February 21, 2016 by hana

statistics
Minutes 126.53 127.27 130 130.35 130.4 130.58 130.87 131.18 131.98 132.55 133.28 133.42 133.43 133.55 133.65 134 134.37 134.62 134.73 135 135.95 136.12 136.17 136.23 136.28 137.7 137.83 137.93 138.18 138.25 138.43 138.67 139.13 139.72 140.25 140.38 140.4 140.42 140.5 141.27 ...
Sunday, February 21, 2016 by vicke

statistics
Minutes 126.53 127.27 130 130.35 130.4 130.58 130.87 131.18 131.98 132.55 133.28 133.42 133.43 133.55 133.65 134 134.37 134.62 134.73 135 135.95 136.12 136.17 136.23 136.28 137.7 137.83 137.93 138.18 138.25 138.43 138.67 139.13 139.72 140.25 140.38 140.4 140.42 140.5 141.27 ...
Saturday, February 20, 2016 by Anonymous

Statistic
Your search for statistics test questions a professor is trying to convince her colleagues that peer tutoring works. she compares the results of students in two classes one with and one without the peer tutoring. for the non-tutored group the mean score fore for 35'...
Friday, February 19, 2016 by Dhelp

statistics
Minutes 126.53 127.27 130 130.35 130.4 130.58 130.87 131.18 131.98 132.55 133.28 133.42 133.43 133.55 133.65 134 134.37 134.62 134.73 135 135.95 136.12 136.17 136.23 136.28 137.7 137.83 137.93 138.18 138.25 138.43 138.67 139.13 139.72 140.25 140.38 140.4 140.42 140.5 141.27 ...
Friday, February 19, 2016 by Anonymous

statistics
Suppose the temperature of a cup of coffee is normally distributed with a mean of 142 degress F. If a cup of coffee has a z score of 1.5, which of the following is true?
Friday, February 19, 2016 by PLZ HELP

Statistics
The distribution of student loan amounts for students is normally distributed ranging from zero to $100,000. Use your knowledge of the Empirical Rule to approximate the standard deviation of the dataset? A) approximately $21,000 B) approximately $12,500 C) approximately $19,...
Friday, February 19, 2016 by Anonymous

Statistics
If, for a given sample size, 10% of all possible confidence intervals do not contain the unknown population parameter value, what is your confidence level?
Friday, February 19, 2016 by Anonymous

Statistics
Country Insurance wants to estimate the cost of damage to cars due to accidents. The population standard deviation of the cost is assumed at $200. They want to estimate the mean cost using a 95% confidence interval with a maximum margin of error of $10. What is the minimum ...
Friday, February 19, 2016 by Anonymous

Statistics
ATM transaction times are normally distributed with a mean of 150 seconds and a standard deviation of 45 seconds. What is the probability a person takes less than 60 seconds to complete their transaction?
Friday, February 19, 2016 by Anonymous

statistics
Two cards selected from standard deck of 52 cards. The first is replaced before second card selected. Find the probability of selecting a diamond and then a king
Thursday, February 18, 2016 by tim

Statistics
The following is a histogram (right skewed) of the first ten terms of a geometric distribution with p = .4. The mean of this distribution is 2.5 and the standard deviation is approximately 1.93. What's the shape of the distribution of sample means for simple random samples...
Thursday, February 18, 2016 by Jim

Statistics
What is the difference between the population distribution, the distribution of the same, and the sampling distribution and what are the formulas to get the normal distribution of each?
Tuesday, February 16, 2016 by Sara

statistics
FBM 124 class consists of 10 male and 12 female students. Two students were chosen to represent the university to an international forum. Compute the probability of choosing (a) two female students (b) no more than 1 male student c)same genders students
Tuesday, February 16, 2016 by Anonymous

Statistics
A volunteer ambulance service handles 0 to 5 service calls on any given day. The probability distribution for the number of service calls is as follows: one column has number of service calls (X) those numbers are 0 1 2 3 4 5. The next column Probability P (X) those numbers ...
Saturday, February 13, 2016 by Karen

Statistics
A sample of size 16 is taken from a normally distributed population with a mean of 12 and a standard deviation of 3. The probability that the sample mean is equal to 12 is a. 1 b. 0.5 c.-0.5 d.0 please explain
Friday, February 12, 2016 by Sara

statistics
Scores: 5,2,4,2 ΣX-2 Σ(X-2) Σ(X-2)^2 can you show me a better idea how to solve this thanks
Thursday, February 11, 2016 by bob

Statistics
When a new machine is functioning properly, only 2% of the items produced are defective. If 5 parts are randomly selected from this production process, what is the probability that at most 1 defective item is in the sample?
Wednesday, February 10, 2016 by lonestar college

Statistics
2.5 Points 30% of the fifth grade students in a large school district read below grade level. The distribution of sample proportions of samples of 100 students from this population is normal with a mean of 0.30 and a standard deviation of 0.045. Suppose that you select a ...
Wednesday, February 10, 2016 by Amy

statistics
A play contains 15 speaking roles, 10 of them female and 5 male. If the director can choose among 16 female actors and 9 male actors to fill the roles, how many different casts are possible? (NOTE: A cast includes BOTH the actor AND the role that they play.) I'm just ...
Monday, February 8, 2016 by McKinsley

Statistics
We are managing a large soy bean farm. To estimate our revenues for the coming year, we need to estimate our crop yield. Soy bean yields are measured by pods/plant. We are planning for a yield of 40 pods/plant. a. We take a random sample of 64 soy bean plants and get a sample ...
Monday, February 8, 2016 by Sara

Statistics
A school experiments with two teaching approaches for mathematics. In one classroom the material is taught using lectures only. In the other classroom lectures are mixed in with the use of manipulatives, computers, and collaborative activities. Do the data below support the ...
Monday, February 8, 2016 by Denise

Statistics
A school experiments with two teaching approaches for mathematics. In one classroom the material is taught using lectures only. In the other classroom lectures are mixed in with the use of manipulatives, computers, and collaborative activities. Do the data below support the ...
Monday, February 8, 2016 by Denise

statistics
A sign is posted in an elevator stating that the maximum number of people allowed is 25, and that the maximum weight capacity is 4000lbs. Suppose the distribution of the variable Weight (among the population using the elevator) is normal with mean 150lbs and standard deviation...
Sunday, February 7, 2016 by Kara

statistics
1. Suppose you administered an anxiety test to a large sample of people and obtained normally distributed scores with a mean of 45 and a standard deviation of 4. Do not use the web calculator to answer the following questions. Instead, use the Z distribution table below and ...
Saturday, February 6, 2016 by Anonymous

statistics
the ages of the members of a gym have a mean of 44 years and a standard deviation of 12 years. what can you conclude from Chebyshev's theorem about the percentage of gym members aged between 26 and 62?
Saturday, February 6, 2016 by dianne

statistics
"using the descriptive statistics for the weight of the babies in ounces, suppose a friend of yours has given birth to a 10 pound 3 ounce baby"
Saturday, February 6, 2016 by Perry

Statistics
A distribution of test scores of 600 examinees follows a normal distriburion with an everage of 80 having a standard deviation 12, how many examinees would you expect to find above a score of 100?
Friday, February 5, 2016 by noel

Statistics
Sickle cell anemia is a genetic blood disorder where red blood cells lose their flexibility and assume an abnormal, rigid, "sickle" shape, which results in a risk of various complications. If both parents are carriers of the disease, then a child has a 25% ...
Friday, February 5, 2016 by Neveah

Statistics
Achusband and wife with brown eyes who have 0.75 probability of having children with brown eyes, 0.125 probability of having children with blue eyes, and 0.125 probability of having children with green eyes. (a) What is the probability that their first child will have ...
Friday, February 5, 2016 by Neveah

Statistics
A population =100 and sd=25. A sample (n=150) has X=102. Using 2 tails of the sampling distribution and the .05 criterion. What is the critical value? Is the sample in the region of rejection? What does this indicate about the likelihood of this sample occurring in this ...
Thursday, February 4, 2016 by Pam

Basic Statistics
home / study / questions and answers / math / statistics and probability / the manager of a vacation resort has claimed that, ... Question The manager of a vacation resort has claimed that, on average, a guest spends at least $1600 at the resort during a one week stay, ...
Thursday, February 4, 2016 by Jameson

Statistics
Suppose that in the city in which the survey is conducted, 50% of adults are married, 15% are single, 25% are divorced, and 10% are widowed. a. Assign probabilities to each simple event in the sample space. b. Which approach did you use in part (a)? Find the probabilities of ...
Thursday, February 4, 2016 by XYZ

Statistics
If a teacher is grading on a curve, the median is 78 and the standard deviation is 9.6, how do i find out the ranges for grades? ex, an A is the top 15% of the curve. I know it has to do with the z score and that is the # of standard deviations the score is from the median, ...
Wednesday, February 3, 2016 by Julie

Statistics
A survey asks adults to report their marital status. The sample space is S = {single, married, divorced, widowed} . Use set notation to represent the event the adult is not married. This is what I think is the answer Married = {single, divorced, widowed}
Wednesday, February 3, 2016 by XYZ

Statistics
Arachnophobia. A 2005 Gallup Poll found that 7% of teenagers (ages 13 to 17) suffer from arachnophobia and are extremely afraid of spiders. At a summer camp there are 10 teenagers sleeping in each tent. Assume that these 10 teenagers are independent of each other.52 (a) ...
Wednesday, February 3, 2016 by Anonymous

Biostatitics
Based on data collected by the National Center for Health Statistics and made available to the public in the Sample Adult database, an estimate of the percentage of adults who indicated to have at some point of their life been tested for HIV is 32 percent of U.S. adults in the...
Monday, February 1, 2016 by ayo

Statistics
Suppose that IQ scores have a bell-shaped distribution with a mean of 99 and a standard deviation of 12. Using the empirical rule, what percentage of IQ scores are less than 87? Please do not round your answer. 87-99 = -12/12 = -1 I get stuck here. I know 1 standard deviation ...
Monday, February 1, 2016 by Comet

statistics
You measure 64 children , obtaining a X of 57.28 . The mean is 56 and sd is 8 Slug says that bc this X is so close to the mean of 56 , this sample could hardly be considered gifted. A. Perform the appropriate statistical procedure to determine whether he is correct B. In what ...
Sunday, January 31, 2016 by pam

statistics, probability
Consider two events A and B in the same sample space such that P(A)=0.4 and P(B)=0.3. Then A and B are mutually exclusive.
Sunday, January 31, 2016 by Vasya

Behavioral Statistics
Because Foofy's score had a relative frequency of .02, she claims she had one of the highest scores on the exam. Why is she correct or incorrect?
Sunday, January 31, 2016 by Nik

statistics
You measure 64 children, obtaining a X of 57.28. Slug says that bc this X is so close to the mean of 56, this sample could hardly be considered gifted . A. Perform the appropriate statical procedure to determine whether he is correct. B. In what percentage of the top scores is...
Saturday, January 30, 2016 by pam

statistics
Company stock price of which has risen so that over the past ten trading days , it's mean selling price is $ 14.89 . Over the years the mean price of the stock has been 10.43 ( sigma = 5.60 ) you wonder if the mean selling price is over the next ten days to go higher . ...
Saturday, January 30, 2016 by pam

statistics
For the data 95 10 7 9 10 11 8 12 7 6 9, find the raw scores that correspond to the following : z= +1.22; z= -0.48
Saturday, January 30, 2016 by pam

Statistics
Suppose that for x = 3, the predicted value is y = 7. The data pair (3, 10) is part of the sample data. What is the value of the residual for x = 3?
Thursday, January 28, 2016 by mike

Statistics
A study was conducted to investigate the relationship between the resale price, y (in hundreds of dollars), and the age, x (in years), of midsize luxury American automobiles. The equation of the line of best fit was determined below. y = 179.3 − 20.78x (a) Find the ...
Thursday, January 28, 2016 by Greg

statistics
Identify the conditions of the independent variable , the dependent variable , their scales of measurement , which measure of central tendency and variability to compute and which scores you would use in the computation . We test whether participants laugh longer ( in seconds...
Saturday, January 23, 2016 by pam

statistics
Ms.Sue What 2 aspects of the data determine which measure of central tendency use?
Thursday, January 21, 2016 by pam

statistics
What 2 aspects of the data determine which measure of central tendency use?
Thursday, January 21, 2016 by pam

Statistics
Hello, I need to analyze an experiment... could you help me? Stewart Fist reported the results of an experiment investigating the link between cell phone use and tumors in mice. the study exposed 100 mice to cell phone radiation for 2 1/2 hour periods each day for 18 months. ...
Thursday, January 21, 2016 by Scarlett

statistics
A customer service division of a telecommunications firm receives 100 mobile phones for repair on a particular week. 18 of the phones are less than a year, 60 phones are more than a year but less than 2 years and the rest are older than 2 years. The company provides warranty ...
Wednesday, January 20, 2016 by Anonymous

probability and statistics
how many different plate numbers can be made using the letters A,B and numbers 0,1,2,3 if each must contain 2 letters and 3 numbers.
Wednesday, January 20, 2016 by jhay

statistics/ mean median mode
What 2 aspects of data determine which measure of central tendency to use ?
Tuesday, January 19, 2016 by pam

statistics/ mean median mode
Describe one personal score for each type of measurement scale (ratio, interval , ratio, ordinal) how the score relates/related to the appropriate measure of central tendency (mean, mode, median ). Miles per month that you spend commuting GPA of several terms/year Average ...
Tuesday, January 19, 2016 by pam

statistics/ mean median mode
1. What two aspects of the data determine which measure of central tendency to use? 2. Why is it best to use the mean with a normal distribution ? Questions are from chapter 4 Basic Statistics for the Behavioral Sciences 7th edition
Tuesday, January 19, 2016 by pam

statistics
1. What two aspects of data determine which measure of central tendency to use? 2. Why is it best to use the mean with a normal distribution ?
Tuesday, January 19, 2016 by pam

Statistics
What do i do to calculate the 25% mean of 50 variables? Like, how many do I take away from the smallest and largest sides?
Tuesday, January 19, 2016 by Anne

Statistics
The intermediate answers from some calculations based on whole number scores are X= 4.3467892 and Y= 3.3333. For the next step, after rounding, what values of X and Y do we use?
Sunday, January 17, 2016 by Pam

STATISTICS
A random sample of clients at a weight loss center were given a dietary supplement to see if it would promote weight loss. The center reported that the 100 clients lost an average of 34 pounds, and that a 95% confidence interval for the mean weight loss this supplement ...
Friday, January 15, 2016 by Anonymous

statistics
in a shipment of 7 items there are three defective items. at random 4 items are selected what is the expected number of defective items?
Friday, January 15, 2016 by arun

statistics
5 men, 1 woman and a chold are to be seated around a round table with seven seats. Find the no. of ways they may have be arranged if the woman and the child must sit together.
Friday, January 15, 2016 by im

statistics
A marketing research shows that for every 100 flyers distributed to potential customers, 1.2 customers will be captured. If 10000 flyers are being distributed, find a. the probability that 150 customers are captured b. the expected value of this probability distribution
Tuesday, January 12, 2016 by Anonymous

Statistics
what is the standard deviation for 57,61,57,57,58,57,61
Sunday, January 10, 2016 by jean

Statistics
Find the interquartile range given these data points: 57,66,69,71,72,73,74,77,78,7879,79,81,81​,82,83,83,88,89,94. When I used the TI-84 calculator, I got ... Q1=72.5 Q3=82.5 IQR=Q3-Q1=82.5-72.5=10 But.. When I created a stem and leaf plot I found that Q2= (78+79)/2 =78....
Thursday, January 7, 2016 by Sanaya

Statistics
Find the interquartile range given these data points: 57,66,69,71,72,73,74,77,78,7879,79,81,81​,82,83,83,88,89,94. When I used the TI-84 calculator, I got ... Q1=72.5 Q3=82.5 IQR=Q3-Q1=82.5-72.5=10 But.... When I created a stem and leaf plot I found that Q2= (78+79)/2 =...
Thursday, January 7, 2016 by Sanaya

Statistics
Will somebody help me find statistics on the spread of AIDS from its discovery to the present?
Wednesday, January 6, 2016 by Victoria

statistics
The pie chart below shows how the total annual income for a certain family is spent. If the total annual income is , what amount is budgeted for Savings and Insurance combined?
Monday, January 4, 2016 by donna

Statistics
The coefficient of correlation between the age and blood pressure of a sample of 8 persons was found to be +0.8, the average age is 50 years and average blood pressure is 60. Their standard deviations were 5 and 10 respectively. a) Obtain the two regression equations b) find ...
Saturday, January 2, 2016 by Sara

English
What is Szymborska's overall opinion of humanity in "A Contribution to Statistics?" Support your response with at least two details or quotes from the poem. ___ I'm kind of torn on this one, because I want to say it's a pessimistic tone on humanity...but ...
Saturday, January 2, 2016 by Michael

statistics
Q- Two samples of sizes 8 and 10 are drawn from two normally distributed population having variance 20 and 36 respectively. Find the probability that the variance of the first sample is more than twice the variance of the second sample.
Saturday, January 2, 2016 by Vivaan

Statistics
Chances are 50-50 that a newborn baby will be a girl. For families with five children, what is the probability that all the children are girls? So far I have: 2X2X2X2X2=32
Thursday, December 31, 2015 by Fran

stats
On the eleventh day of Statistics, my teacher gave to me… eleven pipers piping. While these popular pipers are on tour piping, one piper is randomly selected to win tickets for his immediate family to the show. The breakdown of the number of tickets required follows: (2/...
Thursday, December 31, 2015 by please help

stats
On the ninth day of Statistics, my teacher gave to me --- nine ladies dancing. These nine ladies dancing are the backup dancers for In Sync. It is well known that if dancers don’t warm up adequately before dancing, the dancers will be Out of Sync and may sustain injuries...
Tuesday, December 29, 2015 by please help

stats
On the seventh day of Statistics, my teacher gave to me --- seven swans a-swimming. But can they swim faster than American Olympic gold medallist Michael Phelps? Michael can swim the 200 meter butterfly in 1 minute 54 seconds (which is 114 seconds). In the same event, the swim...
Sunday, December 27, 2015 by HELP

Statistics
On the sixth day of Statistics, my teacher gave to me, six geese-a-laying. The eggs they were a-laying were normally distributed and had a mean of 7cm and standard deviation of 2cm. What is the probability that if you randomly select one egg from each of the six geese, the ...
Saturday, December 26, 2015 by Anonymous

statistics
On the sixth day of Statistics, my teacher gave to me, six geese-a-laying. The eggs they were a-laying were normally distributed and had a mean of 7cm and standard deviation of 2cm. What is the probability that if you randomly select one egg from each of the six geese, the ...
Saturday, December 26, 2015 by Anonymous

Statistics
On the fifth day of Statistics, my teacher gave to me….five golden rings. The rings from which she could select were: 10 golden rings, 5 silver rings and 3 platinum rings. Knowing that your Statistics teacher would naturally have randomly selected the rings, what is the ...
Friday, December 25, 2015 by Please Help

Stats
On the fourth day of Statistics, my teacher gave to me….four calling birds. They weren’t calling birds until they each got a cell phone. Each of the birds randomly selected their phone service independently and got together for lunch (seeds, of course – they are...
Thursday, December 24, 2015 by Please Help

stats
On the third day of Statistics, my teacher gave to me….three French hens. Because she is in a hurry, she randomly selects three pets from the local pet store. Find the probability that she selected three French hens. Hens Chickens French 10 20 American 30 40 In order to ...
Wednesday, December 23, 2015 by Urgent help Confused Please Help

Statistics
On the third day of Statistics, my teacher gave to me….three French hens. Because she is in a hurry, she randomly selects three pets from the local pet store. Find the probability that she selected three French hens. Hens Chickens French 10 20 American 30 40 In order to ...
Wednesday, December 23, 2015 by Danny

statistics
On the second day of Statistics, my teacher gave to me….two turtle doves. The pet store that my Statistics teacher frequents has 25 doves, of which 8 are turtle doves. (See * below. This is not a trick question as turtle doves really do exist. If you are visualizing a ...
Monday, December 21, 2015 by Nicole

statistics
I have a statistics math problem. if someone could answer. "A basketball player makes 70% of free throws. he throws 15 free shots. what is the probability that the basketball player makes 7 or more free shots inside basket."
Monday, December 21, 2015 by jennifer

statistics
If the mean value of the weight of a particular brand of dog food is 20.6 lb and the standard deviation is 1.3, assume a normal distribution and calculate the amount of product that falls below the lower specification value of 19.7 lb
Monday, December 21, 2015 by sam

Statistics
Having trouble with these four questions: 1. Given the rules of the different games of chance described in the sheet you downloaded, think about your odds of winning in each of these three scenarios: A. Craps: Either roll or a 7 or 11 on the first roll, OR match the point ...
Thursday, December 17, 2015 by Tim

Statistics
Across the USA, results for these exams are normally distributed. What does that mean and why is this the case? If you were to create a histogram of all GRE scores, what would you expect the histogram to look like? Would it be symmetrical? Would it be bell shaped? How many ...
Wednesday, December 16, 2015 by Natasha

Statistics
Suppose a college entrance exam has a mean of 1200 and a standard deviation of 100. An Ivy league college will only take applicants in the 90% percentile or higher. what is the lowest score they would need on the entrance exam?
Wednesday, December 16, 2015 by Trisha

Statistics
The repair cost for a certain model of laptop computer has a normal distribution with a mean of $100, and with a standard deviation of $25. If 16 ovens are sent for repairs, find the probability that the average cost of repairs will be within $10 of the mean.
Wednesday, December 16, 2015 by Tom Biggs

Statistics
90% of population is unemployed. Assume 10 employable people are to be selected randomly. what is the expected number of those unemployed.
Wednesday, December 16, 2015 by Benjamin

Statistics
ln a box of 200 computer chips 30 of them are defective. lf 3 chips are chosen at random with replacement, what is the probability that at least one of them is defective?
Tuesday, December 15, 2015 by Kevin

Probability & Statistics
A card is drawn from a standard deck of 52 cards. What is the probability this card will be a king or an ace?
Tuesday, December 15, 2015 by Lester

  1. Pages:
  2. <<Prev
  3. 1
  4. 2
  5. 3
  6. 4
  7. 5
  8. 6
  9. 7
  10. 8
  11. 9
  12. 10
  13. 11
  14. 12
  15. 13
  16. 14
  17. 15
  18. Next>>

Homework Help: Math