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QUESTION 2 A. A study was conducted to estimate the average consumption of chocolates (gm/week) by teenagers in Read County. A random sample of 60

QUESTION 2 A. A study was conducted to estimate the average consumption of chocolates (gm/week) by teenagers in Read County. A random sample of 60 teenagers was surveyed with the following results: = 3750 2 = 244350

(i) Calculate the unbiased point estimates of the population mean and standard deviation.

(ii) Determine the 90% confidence interval for the mean consumption of chocolates by all teenagers in Read County.

B. Construct a 94% confidence interval estimate of the proportion of students in the population who car-pool to college if in a random sample of 250 students, 105 students car-pool to college.

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