A computer manufacturer estimates that its line of minicomputers has, on average, 7.4 days of downtime per year. To test this claim, a researcher contacts seven companies that own one of these computers and is allowed to access company computer records. It is determined that, for the sample, the average number of downtime days is 4.3, with a sample standard deviation of 1.2 days. Assuming that number of downtime days is normally distributed, test to determine whether these minicomputers actually average 7.4 days of downtime in the entire population. Let α = .01.

Q: 42

A: From the provided information, The total number of observations = 8 The location of 10th percentile ...

Q: I need help.

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Q: 33

A:

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A: Definition: Regression analysis is used measure the association between two are more variables where...

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Q: 39

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Q: 2. What is the probability 106 randomly selected people have an average body temperature is greater ...

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Q: 19

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Q: 27

A:

Q: It's not for a grade please help me out.

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Q: Use the formula for the probability of the complement of an event.A pair of dice is rolled 3 times. ...

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.