USE SALT Based on the reported sample mean and sample standard deviation, explain why it is not reasonable to think that the distribution of volunteer times for the population of South Korean middle school students is approximately normal. (Round your answer to nea percent.) If the distribution of volunteer times is approximately normal, for the sample standard deviation of s= 16.54 hours and the sample mean of x = 14.76 hours, approximately 18.67 ✔reasonable to think that the distribution volunteer times is approximately normal. The sample size was not given in the paper, but the sample size was described as large. Suppose that the sample size was 600. Explain why it is reasonable to use a one-sample t confidence interval estimate the population mean even though the population distribution is not approximately normal. (Select all that apply.) It is reasonable to use a one-sample t confidence interval to estimate the population mean since the sample size is at least 30. It is reasonable to use a one-sample t confidence interval to estimate the population mean since the statistics came from a paper. It is reasonable to use a one-sample t confidence interval to estimate the population mean since all of the middle school children in South Korea were surveyed. It is reasonable to use a one-sample t confidence interval to estimate the population mean since the sample size is at most 30. It is reasonable to use a one-sample t confidence interval o estimate the population mean since the sample is representative of the population. ✔% of volunteer times would be negative. Therefore, it is not x 16.086 Calculate a 95% confidence interval (in hours) for the mean number f hours spent in volunteer activities per year for South Korean middle school children. (Round your answers to three decimal places.) 13.434 ✔hrs ✓
USE SALT Based on the reported sample mean and sample standard deviation, explain why it is not reasonable to think that the distribution of volunteer times for the population of South Korean middle school students is approximately normal. (Round your answer to nea percent.) If the distribution of volunteer times is approximately normal, for the sample standard deviation of s= 16.54 hours and the sample mean of x = 14.76 hours, approximately 18.67 ✔reasonable to think that the distribution volunteer times is approximately normal. The sample size was not given in the paper, but the sample size was described as large. Suppose that the sample size was 600. Explain why it is reasonable to use a one-sample t confidence interval estimate the population mean even though the population distribution is not approximately normal. (Select all that apply.) It is reasonable to use a one-sample t confidence interval to estimate the population mean since the sample size is at least 30. It is reasonable to use a one-sample t confidence interval to estimate the population mean since the statistics came from a paper. It is reasonable to use a one-sample t confidence interval to estimate the population mean since all of the middle school children in South Korea were surveyed. It is reasonable to use a one-sample t confidence interval to estimate the population mean since the sample size is at most 30. It is reasonable to use a one-sample t confidence interval o estimate the population mean since the sample is representative of the population. ✔% of volunteer times would be negative. Therefore, it is not x 16.086 Calculate a 95% confidence interval (in hours) for the mean number f hours spent in volunteer activities per year for South Korean middle school children. (Round your answers to three decimal places.) 13.434 ✔hrs ✓
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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