Popular destinations for the newlyweds of today are the Caribbean and Hawaii. According to a recent American Wedding Study by the Conde Nast Bridal Group, a honeymoon, on average, lasts 9.4 days and costs $5111. A sample of 12 newlyweds reported the following lengths of stay of their honeymoons.

a. Find n.
b. Compute Σxi.
c. Determine the sample mean. Round your answer to one more decimal place than that used for the observations.

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5 14 7 10 6 8 0 12 9 10 97 11 12 9 10 9 7 11