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Make a normal probability plot for the given data

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Question: A distributor of spices and seasonings checks moisture content of lots of pepper that it receives from a supplier. The company's specifications on moisture content are from 9 % to 12 %. The following are moisture content data for 22 incoming pepper lots (in %). The data are not listed according to production or arrival order.

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(a) Make a normal probability plot for these data. Does it appear that normal distribution is an adequate model for % moisture content in lots of pepper? Why or why not?

(b) Based on the normal probability plot in (a), estimate the mean and standard deviation of % moisture content in a pepper lot.

(c) Make a dot plot for these data.

(d) Make a histogram for these data using 9.25 to 9.49, 9.5 to 9.74, 9.75 to 9.99, 10.0 to 10.24, . . . .., 11.5 to 11.75 as the "bins."

(e) Make a box plot for these data.

(f) Give the first quartile, median, and third quartile for these data. (g) Find the interquartile range for this set of data.

Reference no: EM131550824

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