Company Xyz Knows That Replacement Times For The Dish Washers It Produces Are Normally Distributed With A Mean Of 14 7 Y 1 (166.76 KiB) Viewed 25 times
Company Xyz Knows That Replacement Times For The Dish Washers It Produces Are Normally Distributed With A Mean Of 14 7 Y 2 (93.58 KiB) Viewed 25 times
Company XYZ knows that replacement times for the dish washers it produces are normally distributed with a mean of 14.7 years and a standard deviation of 2.2 years. Let X be the replacement time of a randomly selected dish washer. a. What is the distribution of X? X~ ? ✓ Please show the following answers to 4 decimal places. b. If a dish washer is randomly chosen, find the probability that it will be replaced in less than 17.6 years. c. If a dish washer is randomly chosen, find the probability that it will be replaced between 16.9 and 21.3 years. Please show the following answer to 1 decimal place. d. If the company wants to provide a warranty so that only 10% of the dish washers will be replaced before the warranty expires, what is the time length of the warranty? years
The mean daily production of a herd of cows is assumed to be normally distributed with a mean of 40 liters, and standard deviation of 7.3 liters. Let X be the production of a randomly selected cow in liters. a. What is the distribution of X? X~ ? ✓ Please show the following answers to 4 decimal places. b. If a cow is randomly chosen, find the probability that its production is more than 43.7 liters. c. If a cow is randomly chosen, find the probability that its production is between 51 and 54.7 liters. Please show the following answer to 1 decimal place. d. The 73rd percentile of the milk production is how many liters?
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