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Sampling
Page 7
Questions (965)
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A random sample of medical files is used to estimate the proportion p
2 answers
asked by
Kim
683 views
a sample of 150 adults is composed of 100 women and 50 men. estimate the standard error of the proportion for the female
2 answers
asked by
suzanne
978 views
How many students must we sample if we want to be within 4% of the true proportion of female students at DeVry University when
1 answer
asked by
klarisa
394 views
A carton of soy milk states on the label that it contains 956 mL.
The volume of soy milk in 9 randomly chosen cartons is measured
1 answer
asked by
farita
476 views
How many students must we sample if we want to be within 4% of the true proportion of female students at DeVry University when
3 answers
asked by
theresa
913 views
Given the situation described, identify the type of sampling involved. A parish in Louisiana is divided geographically into
3 answers
asked by
lisa
453 views
A statistician needs to survey a sample of 50 people that is representative of voters in his community. He prepared a list of
5 answers
asked by
sylvia
602 views
Find the sample size that produces the margin of error +-4.0%
a) 325 b) 25 c) 16 d) 625
1 answer
asked by
Skye
392 views
A researcher is hired by a company to ascertain the morale of company employees. The company employs over 10,000 employees. The
6 answers
asked by
Thara!
1,312 views
You are to imagine that you are part of a select marketing group. This group is to consider the Colorado City Convention and
1 answer
asked by
Jennifer
503 views
A human resources manager at a large company wants to estimate the proportion of employees that would be interested in
2 answers
asked by
Chad
951 views
an opinion poll asks a sample of 500 adults (an SRS) whether they favor giving parents of school age children vouchers that can
1 answer
asked by
mary
971 views
In 2002, approximately 39% of the people eligible to vote in mid-term elections voted. Suppose you have taken a sample of 7
3 answers
asked anonymously
42 views
In 2002, approximately 39% of the people eligible to vote in mid-term elections voted. Suppose you have taken a sample of 7
3 answers
asked anonymously
40 views
In 2002, approximately 39% of the people eligible to vote in mid-term elections voted. Suppose you have taken a sample of 7
3 answers
asked anonymously
45 views
A manufacturer of golf equipment wishes to estimate the number of left-handed golfers. How large a sample is needed in order to
2 answers
asked by
Melanie
773 views
Assume we draw a simple random sample from a population having a mean of 100 and a standard deviation of 16. What is the
5 answers
asked by
Desire
1,249 views
following data values are a simple random sample from a population that is normally distributed, with ssquared=25.0: 47, 43, 33,
1 answer
asked by
Jennifer
445 views
If you are interested in determining the average of a 3-minute telephone call to locations within the continental U.S. what
1 answer
asked by
Samantta
461 views
When the purpose of sampling is to detect when a process becomes too variable, the chart of choice will be an R chart.
I picked
1 answer
asked by
Stuart
475 views
I saw that this was already answered but I can't find it if anyone knows, can you point me in the right direction?
A recent poll
3 answers
asked by
Andrea
1,004 views
According to a student project for statistics 250, the amount of money spent on texts per semester by the population of students
1 answer
asked by
Mary
493 views
A frozen yogurt shop conducted a survey which it asked every fourth customer for his or her favorite flavor. Most of the
3 answers
asked anonymously
75 views
Find the sample size that produces the margin of error ± 3.0%
1 answer
asked by
jerson
464 views
If you have a population of 500,000 people how many to be sample to give a representative profile with only a 5% point margin of
1 answer
asked by
leslie
315 views
Sample Size, Variance and Standard Deviation
A student organization plans to ask 100 randomly selected students how much they
1 answer
asked by
Carma
625 views
Why would a manufacturer choose to offer samples through coolsaving rather than through another method such as in store
1 answer
asked by
MMMMMMMMMM
335 views
A time study od a certain service task found a average cycle time of 15 minutes, with a standard deviation of 5 minutes. These
2 answers
asked by
D.Martin
672 views
When sampling individuals at random from a population, the sample mean of the observed values gets closer and closer to the
1 answer
asked anonymously
47 views
The average age of a vehicle registered in the United States is 8 years, or 96 months. If a random sample of 36 vehicles is
1 answer
asked anonymously
55 views
A frozen yogurt shop conducted a survey in which it asked every fourth customer for his or her favorite flavor. Most of the
1 answer
asked anonymously
42 views
A physical therapist wants to determine the difference in the proportion of men and women who participate in regular sustained
4 answers
asked by
Zechariah
5,141 views
The Acme Candy Company claims that 60% of the jawbreakers it produces weigh more than .4 ounces. Suppose that 800 jawbreakers
5 answers
asked by
Paul
4,333 views
A national caterer determined that 87% of the people who sampled their food said that it was delicious. A random sample of 144
4 answers
asked by
Grace
4,117 views
A researcher wishes to estimate the proportion of adults who have high-spped internet access. What size sample should be
5 answers
asked by
Megan
2,227 views
Determine the sample size required to estimate a population proportion to within 0.032 with 95.7% confidence, assuming that you
4 answers
asked by
Joey
2,069 views
If the standard deviation for waiting times in a line is 5 minutes, the standard deviation for the averages of 30 randomly
4 answers
asked by
Sarah
2,074 views
True or False
As sample size increases, the value of the standard error also increases.
4 answers
asked by
Lyndyc
1,921 views
According to a survey, 21% of residents in a country over age 25 had earned at least a bachelor's degree. You are performing a
2 answers
asked by
Tricia
1,823 views
Determine which of the following four population size and sample size combinations would not require
the use of the finite
4 answers
asked by
Jenn
1,653 views
A random sample of size 15 taken from normally distributed population revealed a sample mean of 75 and a sampl variance of 25.
4 answers
asked by
S
1,650 views
a recent survey of 8 randomly selected social networking sites has a mean of 13.1 million visitors for a specific month. the
3 answers
asked by
chris
1,599 views
Suppose a random sample of size 50 is selected from a population with σ = 10. Find the value of the standard error of the mean
3 answers
asked by
Vanessa
1,621 views
How large a sample should be surveyed to estimate the true proportion of college students who do laundry once a week within 3%
3 answers
asked by
Anonymous
1,560 views
How can I solve this?
A random sample of medical files is used to estimate the proportion p of all people who have blood type B.
2 answers
asked by
trish
1,573 views
a simple random sample of size n=5 is obtained from the population of drivers living in New York City, and the breaking reaction
4 answers
asked by
Nick
1,516 views
Does random sampling give you a representative sample of a population?
1 answer
asked by
rain on your party
50 views
Jonte is trying to determine the amount of money 7th graders spend on candy each month. He thinks he can poll a random sample by
1 answer
asked by
rain on your party
73 views
Which of the following describes a representative sample?(1 point)
Responses a small quantity that accurately represents a large
1 answer
asked anonymously
183 views
Which of the following describes a representative sample?(1 point)
Responses  a small quantity that accurately represents a
1 answer
asked anonymously
123 views
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