heducation.com/hm.tpx KQuestion 12 (of 18) points rcise 9-12 (LO9-2) US. Dairy I
ID: 3324234 • Letter: H
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heducation.com/hm.tpx KQuestion 12 (of 18) points rcise 9-12 (LO9-2) US. Dairy Industry wants to estimate the mean yearly milk consumption A sample of 25 people eals the mean yearly consumption to be 82 gallons with a standard deviation of 24 gallons. Assume that population distribution is normal. (Use t Distribution Table) 1. What is the value of the population mean? 24 82 a-2. What is the best estimate of this value? Estimate population mean c. For a 90% confidence interval, what is the value of t? (Round your answer to 3 decimal places.) Value of ! d. Develop the 90% confidence interval for the population mean (Round your answers to] decima places.) Confidence interval for the p e. Would it be reasonable to conclude that the population mean is 75 gallons? opulation mean is Yes O No O It is not possible to tel. eBook & Resources WorksheetExplanation / Answer
a-1) Option-C) unknown
a-2) Best estimate = sample mean = 82
c) t = t0.05,24 = 1.711
d) Confidence interval = (X bar + t0.05,24 * s / sqrt(n))
= (82 + 1.711 * 24 / sqrt(25))
= (82 + 8.213)
= (73.787 , 90.213)
e)
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