Question

Spg 2019 (2192) Quiz 6: Chapters 8, 11 5 of 8 A manufacturer claims that the lifeti , of its light bulbs is 43 months. The standard deviation of these lifetimes is 4 months. Seventeen bulbs are t random, and their mean lifetime is found to be 42 months. Assume that the population is normalily conclude, at the 0.05 level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from 43 months? Perform a two-tailed test. Then fill in the table below Carry your intermediate computations to at least three decimal places, and round your responses as specified in the table. (If necessary, consult a list of formulas.) The null hypothesis: The alternative hypothesis: | H1 The type of test statistic:(Choose one) The value of the test statistic (Round to at least three decimal places.) The (Round to at least three Can we conclude that the mean lifetime of light buibs made by this manufacturer differs from 43 O Yes No

Where it says “the type of test statistic , chose one) the options are Z, t , Chi square , F” thank you!

Answer 1

Can we conclude that....: No

( please revert if any clarification is required)