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Your company manufactures hot water heaters. The life span of your products are known to be normally distributed with a mean of 13 years and a standard of 1.5 years.... (4 questions in total)
D Question 11 0.4 pts Your company manufactures hot water heaters. The life spans of your product are known to be normally distributed with a mean of 13 years and a standard deviation of 1.5 years. What is the probability that a randomly selected hot water heater has a life span of between 12 and 15 years? (Round to the nearest ten-thousandth.) 0.4 pts D Question 12 Your company manufactures hot water heaters. The life spans of your product are known to be normally distributed with a mean of 13 years and a standard deviation of 1.5 years. What is the probability that a randomly selected hot water heater has a life span of more than 15 years? Round to the nearest ten-thousandth.)
D Question 13 0.4 pts Your company manufactures hot water heaters. The life spans of your product are known to be normally distributed with a mean of 13 years and a standard deviation of 1.5 years. What is the probability that the mean life span in a group of 10 randomly selected hot water heaters is between 12 and 15 years? (Round to the nearest ten-thousandth.) D Question 14 0.4 pts Your company manufactures hot water heaters. The life spans of your product are known to be normally distributed with a mean of 13 years and a standard deviation of 1.5 years. You want to set the warranty on your product so that you have to replace at most 5% of the hot water heaters that you sell. How many years should you claim on your warranty? (Round to the nearest hundredth.)
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AnsGven deles is dend old donation er-) = Irjero) = p (-0,67 1と사33) L-0, 67 0 9082 -0 2 14 -6.6568 o.018 ㄥ 2. q[11Y-22)-f(21-2-11) 1-6.0174 0.9826 a-13 1-S rs

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