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What is the value

What is the value for x2left for a 95% confidence interval when n = 18?

a. 7.564

b. 8.672

c. 9.390

d. 8.231

18,76,764

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## Q : Sample variance and sample standard deviation

Calculate the sample variance and sample standard deviation. Construct a box plot of the data and comment on the information in this display.