Question

Provide an appropriate answer DuraBurn claims that its light bulbs have at least twice the average lifetime of SuperGlo's bulbs. The mean lifetime of the SuperGlo bulbs is 487 hours. A sample of 12 DuraBurn bulbs exhibited an average lifetimex = 1052 hours with a standard deviation s 201 hours. Using the hypotheses Ho 974 Ha 974 compute the value of the test statistic, and find the P-value for the sample. Using a-0.10, state your conclusions about DuraBurn's claim. Use Minitab to compute the P-value. Test statistic: t - 1.34. P-Value: P 0.897.Reject Ho 974. Since OP> a, there is sufficient evidence to conclude that DuraBurn's claim is false Test statistic: t 1.34. P-Value: P 0.897. Retain Ho: = 974. Since OP>a, there is not sufficient evidence to conclude that DuraBurn's claim is false Test statistic: t 1.34. P-Value: P 0.897. Retain Ho: = 974. Since OP> a, there is sufficient evidence to conclude that DuraBurn's claim is false Test statistic: t 1.34. P-Value: P 0.103. Retain Ho: 974. Since OP>a, there is not sufficient evidence to conclude that DuraBurn's claim is false

Answer 1

One-Sample t for the Mean x Summarized data Sample size: 12 Sample mean: 1052 Standard deviation: 201 Perform hypothesis test Hypothesized mean: 974 Select Graphs... Optors. OK H_Help Cancel

One-Sample T Descriptive Statistics N 12 Mean 1052.0 StDev SE Mean 201.0 58.0 90% Upper Bound for 1131.1 mean of Sample Test Null hypothesis Hoiu = 974 (claim) Alternative hypothesis Hiu < 974 T-Value P-value 1.34 0.897 Retain H Since p > a, there is not sufficient evidence to conclude that Duraburn's claim is false