A computer manufacturer estimates that its line of minicomputers has, on average,8.1days 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 is5.6, with a sample standard deviation of1.4days. Assuming that number of downtime days is normally distributed, test to determine whether these minicomputers actually average8.1days of downtime in the entire population. Let= .01.

Appendix A Statistical Tables

(Round your answer to 2 decimal places.)

1.The value of the test statistic is____.

2.choose between reject and fail to reject the null hypothesis

reject the null hypothesis

or

fail to reject the null hypothesis

.