1. What is the width of a confidence interval estimate for a proportion? A. Narr
ID: 3222815 • Letter: 1
Question
1. What is the width of a confidence interval estimate for a proportion? A. Narrower for 95% confidence than 99% confidence B. Wider for a sample size of 100 than fir a sample size of 50 C. Narrower for 95% confidence than 90% confidence D. Narrower when the sample proportion is 0.50 than when the sample proportion is 0.202. True or false ? The t distribution is used to develop confidence interval estimate of the population proportion when the population standard deviation is unknown
3. True or false ? The sample mean is a point estimate of the population mean
1. What is the width of a confidence interval estimate for a proportion? A. Narrower for 95% confidence than 99% confidence B. Wider for a sample size of 100 than fir a sample size of 50 C. Narrower for 95% confidence than 90% confidence D. Narrower when the sample proportion is 0.50 than when the sample proportion is 0.20
2. True or false ? The t distribution is used to develop confidence interval estimate of the population proportion when the population standard deviation is unknown
3. True or false ? The sample mean is a point estimate of the population mean
A. Narrower for 95% confidence than 99% confidence B. Wider for a sample size of 100 than fir a sample size of 50 C. Narrower for 95% confidence than 90% confidence D. Narrower when the sample proportion is 0.50 than when the sample proportion is 0.20
2. True or false ? The t distribution is used to develop confidence interval estimate of the population proportion when the population standard deviation is unknown
3. True or false ? The sample mean is a point estimate of the population mean
Explanation / Answer
1)
C. Narrower for 95% confidence than 90% confidence
2)false
3)true
The sample mean is a point estimate of the population mean.
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