The manager of the local health club is interested in determining the number of times members use the weight room per month. She takes a random sample of 15 members and finds that over the course of a month, the average number of visits was 11.2 with a standard deviation of 3.2. Assuming that the monthly number of visits is normally distributed, which of the following represents a 95% confidence interval for the average monthly usage of all health club members? O a. 11.2 + 1.83 O. b. 11.2 ± 1.74 Oc. 11.2 + 1.77 O d. 11.2 ± 1.62

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A: From the provided information, Sample size (n) = 16 Confidence level = 90%

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Q: A random sample of 16 pharmacy customers showed the waiting times below (in minutes). 16 11 21 22 19…

A:

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A: Note: Hey there! Thank you for the question. As you have posted multiple sub-parts, we have helped…

Q: A random sample of 16 pharmacy customers showed the waiting times below (in minutes).   20 27 24 23…

A: The sample mean is calculated as follows: The standard deviation is calculated as follows:

Q: A random sample of 16 pharmacy customers showed the waiting times below (in minutes).  16 21 20…

A:

Q: The manager of the local health club is interested in determining the number of times members use t…

A: Given data,n=15df=n-1=14x=11.2s=3.2α=0.05t-critical value at df=14 and α=0.05 is tc=2.145

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Q: A random sample of 16 pharmacy customers showed the waiting times below (in minutes).   15 19 16 18…

A:

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A:

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Q: a researcher was interested in comparing the amount of time watching television by women and by men.…

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Q: 1. The following data is the acetaminophen content (in mg) in 10 separate tablets of Panadol Extra…

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Q: Suppose that the population of the scores of all high school seniors who took the SAT Math (SAT-M)…

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.