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A computer manufacturer estimates that its line of minicomputershas, on average, 8.5 days of downtime per year. To testthis claim, a researcher contacts seven compa...

Question

A computer manufacturer estimates that its line of minicomputershas, on average, 8.5 days of downtime per year. To testthis claim, a researcher contacts seven companies that own one ofthese computers and is allowed to access company computer records.It is determined that, for the sample, the average number ofdowntime days is 5.8, with a sample standard deviationof 1.5 days. Assuming that number of downtime days isnormally distributed, test to determine whether these minicomputersactually average

A computer manufacturer estimates that its line of minicomputers has, on average, 8.5 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 5.8, with a sample standard deviation of 1.5 days. Assuming that number of downtime days is normally distributed, test to determine whether these minicomputers actually average 8.5 days of downtime in the entire population. Let Î± = .01. Round your answer to 2 decimal places.)- A. The value of the test statistic is B. do we fail to reject the null hypothesis or reject the null hypothesis

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