Question Solved1 Answer QUESTION 5.1 Find a 95% confidence interval estimale of the mean weight of all women based on a sample of 60 women with a mean sample weight of 150.27. From past studies, the standard deviation is known to be 30.87.Write your answer EXACTLY as is given by Excel. Do not round. The lower limit is A pounds. The upper limit is B pounds. Enter an answer .5 points QUESTION 5.2 A survey of 300 people between the ages of 18 and 25, showed that they spend, an average $137.23 on entertainment each month. The population Standard deviation is known to be $31.44. Constructa confidence interval for the mean amount of money people 17 to 25 spend on entertainment cach month. Use a confidence level of 99%. Write your answer EXACTLY as is given by Excel. Do not round. The lower limit is $ The upper limit is B Enter an answer 5 points
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Transcribed Image Text: QUESTION 5.1 Find a 95% confidence interval estimale of the mean weight of all women based on a sample of 60 women with a mean sample weight of 150.27. From past studies, the standard deviation is known to be 30.87.Write your answer EXACTLY as is given by Excel. Do not round. The lower limit is A pounds. The upper limit is B pounds. Enter an answer .5 points QUESTION 5.2 A survey of 300 people between the ages of 18 and 25, showed that they spend, an average $137.23 on entertainment each month. The population Standard deviation is known to be $31.44. Constructa confidence interval for the mean amount of money people 17 to 25 spend on entertainment cach month. Use a confidence level of 99%. Write your answer EXACTLY as is given by Excel. Do not round. The lower limit is $ The upper limit is B Enter an answer 5 points
More Transcribed Image Text: QUESTION 5.1 Find a 95% confidence interval estimale of the mean weight of all women based on a sample of 60 women with a mean sample weight of 150.27. From past studies, the standard deviation is known to be 30.87.Write your answer EXACTLY as is given by Excel. Do not round. The lower limit is A pounds. The upper limit is B pounds. Enter an answer .5 points QUESTION 5.2 A survey of 300 people between the ages of 18 and 25, showed that they spend, an average $137.23 on entertainment each month. The population Standard deviation is known to be $31.44. Constructa confidence interval for the mean amount of money people 17 to 25 spend on entertainment cach month. Use a confidence level of 99%. Write your answer EXACTLY as is given by Excel. Do not round. The lower limit is $ The upper limit is B Enter an answer 5 points
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Solution: Question 5.1. The 95% confidence interval is: bar(x)+-z(0.05)/(2)((sigma)/(sqrtn)) 150.27+-1.96((30.87)/(sqrt60)) 150.27+-7.811187732 (150.27-7.811187732,150.27+7.811187732) (142.4588123,158.0811877) Lower limit=142.4588123 Upper limit =158.0811 ... See the full answer