The table provides the number of Facebook friends for a sample of 50 people aged 18 to 25. a) Determine the percentiles for each of the Number of Friends intervals. b) Determine the quartiles and the interquartile range. c) Make a box and whisker plot. d) Determine whether there are any outliers.

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A: We have,  Z = p^ - pp(1-p)n

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A: Mean of the set of Data: Mean=Sum of the valuestotal=7+10+14+17+205=685=13.6

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Q: 10 15 20 25 for the toolbar, press ALT+F10 (PC) or ALT-FN+F10 (Mac.

A:

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A: The given interval estimate for the mean is (9.2, 18.8).

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A: Margin or error = 0.02 z-critical value at 0.05 = 1.96

Q: The bookstore at IRSC would like to estimate the proportion of students who prefer electronic…

A: Solution

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A: Sampling Distribution of a Proportion There are several ways to calculate the sampling distribution…

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A: answer is explained below

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A: Stem and leaf plot is a representation of data points.

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A: Given, n=100 μ=55 σ=20

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A: The given data is already arranged in ascendingorder.110, 210, 389, 465, 890, 1000, 1101,…

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A: Among 471 households 385 households have internet fiber cable, therefore 471-385 = 86 households…

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A: Stratified random sampling: Stratified random sampling is a method of sampling in which, the…

Q: The bookstore at IRSC would like to estimate the proportion of students who prefer electronic…

A: Sample size n = 30 Number of students who prefers eBook X = 4   Formula Used: Point estimate of…

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A: The given interval estimate for the mean is (9.2, 13.4).The margin of error is calculated below:

Q: The sample mean X is a point estimate of the

A: Population is the whole set of observations that are used for study. Sample is the subset of the…