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Question 22 A dishwasher has a mean lifetime of 10 years with an estimated standard deviation of 2.15 years. The lifetim
Posted: Wed Jul 06, 2022 12:13 pm
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- Question 22 A Dishwasher Has A Mean Lifetime Of 10 Years With An Estimated Standard Deviation Of 2 15 Years The Lifetim 1 (57 KiB) Viewed 11 times
Question 22 A dishwasher has a mean lifetime of 10 years with an estimated standard deviation of 2.15 years. The lifetime of a dishwasher is normally distributed. Suppose you are a manufacturer and you take a sample of 12 dishwashers that you made. Find the probability that the sample would have a mean lifetime less than 10.25 years? Round to four decimal places.
Question 23 4 pts 4 pts The mean starting salary for nurses is 67,811 dollars nationally. The standard deviation is approximately 10,370 dollars. The starting salary is not normally distributed. A sample of 46 starting salaries for nurses is taken. What is the probability the average starting salary for this sample is greater than 68,473? Round to four decimal places.