Use the confidence level and sample data to find a confidence interval for estimating the population u. Round your answer to the same number of decimal places as the sample mean. From packages received by a parcel service, 32 are randomly selected. The sample has a mean weight of 21.2 pounds. The population standard deviation is a = 1.7 pounds. What is the 95% confidence interval for the true mean weight, u, of all packages received by the parcel service? O A. 20.5 Ib

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Use the confidence level and sample data to find a confidence interval for estimating the population u. Round your answer to the same number of decimal places as the sample mean.
From packages received by a parcel service, 32 are randomly selected. The sample has a mean weight of 21.2 pounds. The population standard deviation is a = 1.7 pounds. What is the 95% confidence
interval for the true mean weight, u, of all packages received by the parcel service?
O A. 20.5 lb <u<21.9 lb
O B. 20.7 lb <u<21.7 lb
OC. 20.6 lb <u<21.8 lb
O D. 20.4 lb <u<22.0 lb
Click to select your answer.
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Transcribed Image Text:Use the confidence level and sample data to find a confidence interval for estimating the population u. Round your answer to the same number of decimal places as the sample mean. From packages received by a parcel service, 32 are randomly selected. The sample has a mean weight of 21.2 pounds. The population standard deviation is a = 1.7 pounds. What is the 95% confidence interval for the true mean weight, u, of all packages received by the parcel service? O A. 20.5 lb <u<21.9 lb O B. 20.7 lb <u<21.7 lb OC. 20.6 lb <u<21.8 lb O D. 20.4 lb <u<22.0 lb Click to select your answer. tv MacBook Air 4) F10 FII 80 F3 esc # $ % & * @ 2 3 4 5 7 8 9 P Y
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