Mathematics, 04.06.2021 02:00 solizpaco7124

A computer manufacturer estimates that its line of minicomputers has, on average, 7.5 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 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 7.5 days of downtime in the entire population. Let α = .01. Appendix A Statistical Tables

(Round your answer to 2 decimal places.)

The value of the test statistic is enter the value of the test statistic
and we choose between reject and fail to reject the null hypothesis
.

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A computer manufacturer estimates that its line of minicomputers has, on average, 7.5 days of downti...