A manufacturer knows that their items have a normally distributed lifespan, with a mean of 14 years, and standard deviation of 0.8 years. If you randomly purchase 4 items, what is the probability that their mean life will be longer than 15 years?

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A: Let X denote complaints received by the Airline per day.Given that the average number of complaints…

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A: Sample size  n = 433Number of people aged 65 and over had sleep apnea(x) = 107

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A: From the provided information,Confidence level = 99%

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Q: The data below are the number of absences and the final grades of 9 randomly selected students from…

A: The data shows the number of absences and the final grades of 9 randomly selected students from a…

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Q: In a sample of 295 male job-holders, 69% said that they are satisfied with their jobs. In another…

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A:

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A: X = 4.488 , 4.195 , 4.444 , 4.903 , 4.685 , 4.262, 4.175 , 3.514 ,  4.135 ,  4.242 , 4.805 ,…

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Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a and…

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A: The data you provided:

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Q: The cost of five homes in a certain area is given.164000 172000 192000 162000 1242000Which measure…

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Q: A statistics teacher claims that, on the average, 15% of her students get a grade of A, 25% get a B,…

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Q: x Given the following probability distribution of a discrete random variable X, 0 1 2 3 4 5 6 7 8…

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Q: Anthony has just received Covid-19 test results from a patient named Melania. The accuracy of the…

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