We want to construct a 95% confidence interval for the true proportion of all adult males...
We want to construct a 95% confidence interval for the true proportion of all adult males who have spent time in prison, with a margin of error of 0.02. From previous studies, we believe the proportion to be somewhere around 0.07. The required sample size is, therefore:
Select one:
a. 620
b. 626
c. 632
d. 670
Homework Answers
Hence
option b) i.e 626 is correct and other options are incorrect.Add Answer to:
We want to construct a 95% confidence interval for the
true proportion of all adult males...
on 8 et answered d out of We want to construct a 95% conlidence interval for...
on 8 et answered d out of We want to construct a 95% conlidence interval for the true proportion of all adult males who have spent time in prison with a margin of error of 0.02. From previous studies, we believe the proportion to be somewhere around 0.07 The required sample size is therefore Select one: 3.620 Question b. 626 C.632 e d. 670
To estimate the proportion of voters, you want to construct a 95% confidence interval for the...
To estimate the proportion of voters, you want to construct a 95% confidence interval for the population proportion with maximum error 0.052. How large a sample must be taken?
8. (9 pts) Suppose that we want to construct a 95% confidence interval to estimate the...
8. (9 pts) Suppose that we want to construct a 95% confidence interval to estimate the percentage of voters who would vote a candidate. We suggest that approximately 46% would vote for the candidate. Suppose that we want the margin of error for the confidence interval is no more than 1%. Determine how large the sample size should be.
Question 19 (5 points) A pollster wants to construct a 95% confidence interval for the proportion...
Question 19 (5 points) A pollster wants to construct a 95% confidence interval for the proportion of adults who believe that economic conditions are getting better. A Gallup poll taken in July 2010 estimates this proportion to be 0.33. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.039? Write only an integer as your answer. Your Answer: Answer Question 20 (5 points) A researcher wants to construct a...
A pollster wants to construct a 95% confidence interval for the proportion of children who watch...
A pollster wants to construct a 95% confidence interval for the proportion of children who watch Spongebob Squarepants. Estimate the sample size needed so that the confidence interval will have a margin of error of 0.061 ? Write only an integer as your answer.
Find a 95% confidence interval for the current true proportion More Prahces We want to estimate...
Find a 95% confidence interval for the current true
proportion
More Prahces We want to estimate the proportion of Philadelphia families with children enrolled in preschool. In a random sample of 50 Philadelphia families with children of preschool age, 35 had children enrolled in preschool. Find a 95% confidence interval for the current true proportion of Philadelphia families with the children enrolled in preschool.
Assume that you want to construct a 95% confidence interval estimate of a population mean. Find...
Assume that you want to construct a 95% confidence interval estimate of a population mean. Find an estimate of the sample size needed to obtain the specified margin of error for the 95% confidence interval. The sample standard deviation is given below. Margin of error equals$5, standard deviation equals$19 The required sample size is __.
Refer to the accompanying data set and construct a 95% confidence interval estimate o the mean pulse rate of adult fema...
Refer to the accompanying data set and construct a 95% confidence interval estimate o the mean pulse rate of adult females; then do the same or adult mae Click the icon to view the pulse rates for adult females and adult males the results 1 Pulse Rates Construct a 95% confidence interval of the mean pulse rate for adult females bpm bpm (Round to one decimal place as needed.) 79 94 84 Construct a 95% confidence interval of the mean...
Based on a random sample of 120 rhesus monkeys, a 95% confidence interval for the proportion...
Based on a random sample of 120 rhesus monkeys, a 95% confidence interval for the proportion of rhesus monkeys that live in a captive breeding facility and were assigned to research studies is (0.67, 0.83). Which of the following is true? A. If we used a different confidence level, the point estimate would remain in the center of the confidence interval. B. A larger sample size would yield a wider confidence interval. C. The margin of error for the confidence...
Using the sample of size 200, construct a 95% confidence interval for the proportion of Youth...
Using the sample of size 200, construct a 95% confidence interval for the proportion of Youth Survey participants who would describe themselves as being about the right weight (Round to three decimal places.) Sample Proportion = Margin of error Lower limit Upper limit Does your 95% confidence interval based on the sample of size 200 include the true proportion of Youth Survey participants who would describe themselves as being about the right weight? O Yes O No
on 8 et answered d out of We want to construct a 95% conlidence interval for the true proportion of all adult males who have spent time in prison with a margin of error of 0.02. From previous studies, we believe the proportion to be somewhere around 0.07 The required sample size is therefore Select one: 3.620 Question b. 626 C.632 e d. 670
Question 19 (5 points) A pollster wants to construct a 95% confidence interval for the proportion of adults who believe that economic conditions are getting better. A Gallup poll taken in July 2010 estimates this proportion to be 0.33. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.039? Write only an integer as your answer. Your Answer: Answer Question 20 (5 points) A researcher wants to construct a...
Find a 95% confidence interval for the current true
proportion
More Prahces We want to estimate the proportion of Philadelphia families with children enrolled in preschool. In a random sample of 50 Philadelphia families with children of preschool age, 35 had children enrolled in preschool. Find a 95% confidence interval for the current true proportion of Philadelphia families with the children enrolled in preschool.
Refer to the accompanying data set and construct a 95% confidence interval estimate o the mean pulse rate of adult females; then do the same or adult mae Click the icon to view the pulse rates for adult females and adult males the results 1 Pulse Rates Construct a 95% confidence interval of the mean pulse rate for adult females bpm bpm (Round to one decimal place as needed.) 79 94 84 Construct a 95% confidence interval of the mean...
Using the sample of size 200, construct a 95% confidence interval for the proportion of Youth Survey participants who would describe themselves as being about the right weight (Round to three decimal places.) Sample Proportion = Margin of error Lower limit Upper limit Does your 95% confidence interval based on the sample of size 200 include the true proportion of Youth Survey participants who would describe themselves as being about the right weight? O Yes O No
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