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Questions (829)
A health inspector wants to check compliance with a new city ordinance on meat storage. Since he can only inspect 10 of the 33
10 answers
asked by
Jammal
1,412 views
A cell phone service provider has selected a random sample of 20 of its customers in an effort to estimate the mean number of
4 answers
asked by
timothy kendricks
1,372 views
A government survey conducted to estimate the mean price of houses in a metropolitan area is designed to have a margin of error
4 answers
asked by
Vivian
1,343 views
An IQ test is designed so that the mean is 100 and the standard deviation is 19 for the population of normal adults. Find the
2 answers
asked by
Stephanie
1,330 views
Suppose the mean of dogs a pet shop grooms each day is known to be 14.2 dogs. If a sample of n=12 days is chosen and a total of
2 answers
asked by
Jake
1,300 views
1. A random sample of size 49 is taken from a large population, measuring the time it takes to complete a driver’s license
4 answers
asked by
Anonymous
1,274 views
One method for estimating the availability of office space in large cities is to conduct a random sample of offices, and
4 answers
asked by
tea
1,275 views
A new manager, hired at a large warehouse, was told to reduce the 26% employee sick leave. The manager introduced a new
1 answer
asked by
Penny
1,283 views
In a poll of 400 voters in a certain state, 61% said that they opposed a voter ID bill that might hinder some legitimate voters
4 answers
asked by
Scott
1,268 views
A population has a mean of 200 and standard deviation of 50 and simple random sample size of 100 and x is used to estimate u.
1 answer
asked by
Vroni
1,249 views
The business college computing center wants to determine the proportion of business students who have laptop computers. If the
2 answers
asked by
Francheska
1,232 views
Recently, a case of food poisoning was traced to a particular restaurant chain. The source was identified and corrective actions
1 answer
asked by
Bill
1,241 views
True or false? Every random sample of the same size from a given population will produce exactly the same confidence interval
3 answers
asked by
jr
1,197 views
A simple random sample of 10 households, the number of TV's that each household had is as follows:
1, 3, 1, 2, 0, 2, 1, 1, 1, 5
2 answers
asked by
Anonymous
1,220 views
If you want to be 95% confident of estimating the population proportion to within a sampling error of and there is historical
2 answers
asked by
Johniece McCoy
1,207 views
Which of the following describes a representative sample?(1 point)
Responses the amount of evidence needed to prove a claim the
1 answer
asked anonymously
44 views
A sample of n= 4 scores has SS equals 48 what is the estimated standard error for the sample mean
2 answers
asked by
Jamie
1,125 views
A superstore manager wishes to give out a survey to a sample of 25 of its workers. It wants the sample to be a good
3 answers
asked by
David
1,103 views
1. The scores of students on the ACT college entrance examination in a recent year had a normal distribution with a mean of 18.6
2 answers
asked by
Tasha
1,127 views
The Democrat and Chronicle reported that 25% of the flights arriving at the San Diego airport during the first five months of
3 answers
asked by
jessica knowes
1,098 views
The amount of fill(weight of contents)put into a glass jar of spaghetti sauce is normally distributed with mean=850g and
2 answers
asked by
Joel
1,079 views
A TV pollster believes that 75% of all TV households would be tuned in to Game 6 of 1997 NBA Championship series between the
1 answer
asked by
Pat
1,082 views
Your mail-order company advertises that it ships 95% of its orders within three working days. You select an SRS of 100 of the
1 answer
asked by
Dylan
1,070 views
True or False
If a sample of at least 30 scores is randomly selected from a normal population, the sample mean will be equal to
3 answers
asked by
Lyndyc
1,045 views
Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were
2 answers
asked by
Marcus
1,029 views
If the standard deviation of a population is 56 and we want the standard error (the standard deviation of the sample mean) to be
3 answers
asked by
Jana
1,017 views
One year, professional sports players salaries averaged 1.6 million with a standard deviation of .7 million. Suppose a sample of
2 answers
asked by
Katie
1,016 views
A simple random sample is drawn from a normally distributed population. The value of which of the following will not be known
3 answers
asked by
tom
1,022 views
At a large publishing company, the mean age of proofreaders is 36.2 years, and the standard deviation is 3.7 years. If a random
2 answers
asked by
Cindy
1,010 views
Evaluating Evidence Quick Check
4 of 44 of 4 Items Question Which of the following describes a representative sample?(1 point)
1 answer
asked anonymously
239 views
Let’s assume you have taken 100 samples of size 36 each from a normally distributed population. Calculate the standard
2 answers
asked by
Anonymous
999 views
The mean television viewing time for Americans is 15 hours per week. Suppose a sample of 60 Americans is taken to further
6 answers
asked by
Rebecca
986 views
Three firms carry inventories that differ in size. Firm A's inventory contains 2000 items, firm B's inventory contains 5000
1 answer
asked by
Anksuh
993 views
A POLL OF 1300 RANDOMLY SELECTED STUDENTS IN GRADES 6 THROUGH-8 WAS CONDUCTED AND FOUND THAT 54% ENJOY PLAYING SPORTS. WOULD
2 answers
asked by
CHARLOTTE JAMES
997 views
Which sample is better for making a prediction? Why?
Sample A: A random sample of 10 customers leaving a store Sample B: A random
2 answers
asked by
MAX
1,000 views
Suppose a different student reaches in the bag, randomly selects their twenty chips, and estimates that 60% of the students are
4 answers
asked by
Layla
988 views
Adam wants to know the mean number of minutes students commuting back and forth to school each day. he selects a sample of 5
6 answers
asked by
Bonnie
966 views
55% of the people in a town have brown eyes. you choose a random sample of 200 people to survey regarding their eye color. What
1 answer
asked by
Anonymous
965 views
Virtual call centers are staffed by individuals working out of their homes. ABC Services is considering employing home-based
1 answer
asked by
Amy
944 views
Kris is staining 30 wooden rectangular fence pieces. The fence pieces are different sizes, and Kris wants
to determine the
3 answers
asked by
Bonnie
940 views
A barrel of jelly beans stands inside a candy shop.
Which of these processes uses statistics to estimate the percentage of
4 answers
asked by
Cassie
944 views
Use the given information to find the minimum sample size required to estimate an unknown population mean u. How many
adults must
2 answers
asked by
anonymous
904 views
An April 15, 2002 report in Time Magazine stated that the average age for women to marry in the United States is now 24.9 years
2 answers
asked by
jennifer
899 views
a random sample of 100 college students is taken from the student body of a large university. assume that a population mean of
3 answers
asked by
jc
908 views
Suppose that, in fact, the blood cholesterol level of all men aged 20 to 34 follows the normal distribution with mean of u = 188
3 answers
asked by
Zachovia
905 views
Assume that body temperatures of healthy adults are normally distributed with a mean of 98.2°F and a standard deviation of
1 answer
asked by
ali awan
897 views
A political candidate has asked you to conduct a poll to determine what percentage of people support her.
If the candidate only
1 answer
asked by
Livia
889 views
The mean life expectancy of a certain type of light bulb is 945 hours with a standard deviation of 21 hours. What is the
2 answers
asked by
tf9346
876 views
The mean weight (1.0042kg)of the contents of samples of 30 bags of sugar has
standard error 0.008kg. Choose the option that is
1 answer
asked by
albert
873 views
A researcher is interested in
estimating the average salary of teachers in a large urban school district. She wants to be 95%
4 answers
asked by
Anonymous
876 views
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Parent Categories (42)
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