Question Solved1 Answer QUESTION 8.1 A researcher wants to investigate the number of hours a week a typical college student dedicates to study. From past studies, we know that the standard deviation of similar studies is 3.1 hours. How many students should be surveyed if we want to be accurate within 0.5 hours. Use a 95% confidence level. Write your answer EXACTLY as is given by Excel. Do not round. We need to survey a minimum of A students. Enter an answer. 5 points

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Transcribed Image Text: QUESTION 8.1 A researcher wants to investigate the number of hours a week a typical college student dedicates to study. From past studies, we know that the standard deviation of similar studies is 3.1 hours. How many students should be surveyed if we want to be accurate within 0.5 hours. Use a 95% confidence level. Write your answer EXACTLY as is given by Excel. Do not round. We need to survey a minimum of A students. Enter an answer. 5 points
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Transcribed Image Text: QUESTION 8.1 A researcher wants to investigate the number of hours a week a typical college student dedicates to study. From past studies, we know that the standard deviation of similar studies is 3.1 hours. How many students should be surveyed if we want to be accurate within 0.5 hours. Use a 95% confidence level. Write your answer EXACTLY as is given by Excel. Do not round. We need to survey a minimum of A students. Enter an answer. 5 points
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Solution: We have given population standand deviation 6=3.1 Margin of error =0.5We have to find sumple size with 951 confidence level.for alpha=0.05The critical value is zc=1 ... See the full answer