A) 82 B) 128 5) In order to set rates, an insurance company is trying to estimate the number of sick davs that full time workers at an auto repair shop take per year. A previous study indicated that the standard deviation was 3.1 days. How large a sample must be selected if the company wants to be 97% confident that the true mean differs from the samplee mean by no more than 1 day? A) 512 B) 1024 C) 141 D) 46 Find the sample proportion, p-hat. 6) When 410 college students were surveyed,150 said they own their car. Find a point estimate for p (p-hat), the population proportion of students who own their cars. A) 0.634 B) 0.268 C) 0.366 D) 0.577 Construct the Confidence Interval for the proportion. 7) In a survey of 2480 golfers, 372 said they were left-handed. Construct a 92% confidence interval for the proportion of left-handed golfers from this sample. A) (0.1250, 0.1565) B) (0.1375, 0.1625) C) (0.1125, 0.1900) D) (0.1870, 0.2150) 8) A survey of 280 homeless persons showed that 63 were veterans. Construct a 90% confidence interval for the proportion of homeless persons who are veterans. A) (0.167, 0.283) B) (0.184, 0.266) C) (0.161, 0.289) D) (0.176, 0.274) nimum Sample size for proportion (Special formula) 9) A pollster wishes to estimate the proportion of United States voters who favor capital punishment. How large sample is needed in order to be 98% confident that the sample proportion will not differ from the true proport by more than 3%? A) 1068 D) 3017 60 09
A) 82 B) 128 5) In order to set rates, an insurance company is trying to estimate the number of sick davs that full time workers at an auto repair shop take per year. A previous study indicated that the standard deviation was 3.1 days. How large a sample must be selected if the company wants to be 97% confident that the true mean differs from the samplee mean by no more than 1 day? A) 512 B) 1024 C) 141 D) 46 Find the sample proportion, p-hat. 6) When 410 college students were surveyed,150 said they own their car. Find a point estimate for p (p-hat), the population proportion of students who own their cars. A) 0.634 B) 0.268 C) 0.366 D) 0.577 Construct the Confidence Interval for the proportion. 7) In a survey of 2480 golfers, 372 said they were left-handed. Construct a 92% confidence interval for the proportion of left-handed golfers from this sample. A) (0.1250, 0.1565) B) (0.1375, 0.1625) C) (0.1125, 0.1900) D) (0.1870, 0.2150) 8) A survey of 280 homeless persons showed that 63 were veterans. Construct a 90% confidence interval for the proportion of homeless persons who are veterans. A) (0.167, 0.283) B) (0.184, 0.266) C) (0.161, 0.289) D) (0.176, 0.274) nimum Sample size for proportion (Special formula) 9) A pollster wishes to estimate the proportion of United States voters who favor capital punishment. How large sample is needed in order to be 98% confident that the sample proportion will not differ from the true proport by more than 3%? A) 1068 D) 3017 60 09
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
Topic Video
Question
5,6,7
Transcribed Image Text:A) 82
B) 128
5) In order to set rates, an insurance company is trying to estimate the number of sick davs that full time workers at an
auto repair shop take per year. A previous study indicated that the standard deviation was 3.1 days. How large a
sample must be selected if the company wants to be 97% confident that the true mean differs from the samplee mean
by no more than 1 day?
A) 512
B) 1024
C) 141
D) 46
Find the sample proportion, p-hat.
6) When 410 college students were surveyed,150 said they own their car. Find a point estimate for p (p-hat), the
population proportion of students who own their cars.
A) 0.634
B) 0.268
C) 0.366
D) 0.577
Construct the Confidence Interval for the proportion.
7) In a survey of 2480 golfers, 372 said they were left-handed. Construct a 92% confidence interval for the proportion
of left-handed golfers from this sample.
A) (0.1250, 0.1565)
B) (0.1375, 0.1625)
C) (0.1125, 0.1900)
D) (0.1870, 0.2150)
8) A survey of 280 homeless persons showed that 63 were veterans. Construct a 90% confidence interval for the
proportion of homeless persons who are veterans.
A) (0.167, 0.283)
B) (0.184, 0.266)
C) (0.161, 0.289)
D) (0.176, 0.274)
nimum Sample size for proportion (Special formula)
9) A pollster wishes to estimate the proportion of United States voters who favor capital punishment. How large
sample is needed in order to be 98% confident that the sample proportion will not differ from the true proport
by more than 3%?
A) 1068
D) 3017
60 09
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