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The manager of a grocery store has taken a random sample of 100 customers. The average length of time It took the customers in the sample to check out was 3.1 minutes with a sample standard deviation of 0.5 minutes. We want to determine whether or, not the mean waiting time of all customers is significantly different than 3 minutes. Then the correct set of hypotheses is اختر أحد الخيارات H1: µ # 3 O a. Н: р 3.1 b. HO: u 3 H1: µ = 3 O c. HO: p = 3 H1: u 3 O d HO: u t 3 H1: u = 3.1 O

The manager of a grocery store has taken a random sample of 100 customers. The average length of time It took the customers in the sample to check out was 3.1 minutes with a sample standard deviation of 0.5 minutes. We want to determine whether or, not the mean waiting time of all customers is significantly different than 3 minutes. Then the correct set of hypotheses is اختر أحد الخيارات H1: µ # 3 O a. Н: р 3.1 b. HO: u 3 H1: µ = 3 O c. HO: p = 3 H1: u 3 O d HO: u t 3 H1: u = 3.1 O

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
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The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took the customers in the sample to check out was 3.1 minutes with a sample standard deviation of 0.5 minutes. We want to determine whether or, not the mean waiting time of all customers is significantly different than 3 minutes. Then the correct set of hypotheses is اختر أحد الخيارات a. HO: µ = 3.1 H1: p 3 O b. HO: u 3 H1: µ = 3 O c. HO: µ = 3 H1: u = 3 O d. HO: p 3 H1: p = 3.1 O
Transcribed Image Text:The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took the customers in the sample to check out was 3.1 minutes with a sample standard deviation of 0.5 minutes. We want to determine whether or, not the mean waiting time of all customers is significantly different than 3 minutes. Then the correct set of hypotheses is اختر أحد الخيارات a. HO: µ = 3.1 H1: p 3 O b. HO: u 3 H1: µ = 3 O c. HO: µ = 3 H1: u = 3 O d. HO: p 3 H1: p = 3.1 O
The standard error to estimate the population mean for a 99% confidence level with sample size 16 and sample variance 49 is اختر أحد الخيارات a. 0.44 O b. 1.75 O с. 12.25 d. 3.06 O
Transcribed Image Text:The standard error to estimate the population mean for a 99% confidence level with sample size 16 and sample variance 49 is اختر أحد الخيارات a. 0.44 O b. 1.75 O с. 12.25 d. 3.06 O
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