Mathematics, 22.04.2020 04:18 monica1217
The quality-control manager at a compact fluorescent light bulb (CFL) factory needs to determine whether the mean life of a large shipment of CFLs is equal to 7 comma 5137,513 hours. The population standard deviation is 1 comma 080 hours1,080 hours. A random sample of 8181 light bulbs indicates a sample mean life of 7 comma 2137,213 hours. a. At the 0.050.05 level of significance, is there evidence that the mean life is different from 7 comma 513 hours question mark7,513 hours? b. Compute the p-value and interpret its meaning. c. Construct a 9595% confidence interval estimate of the population mean life of the light bulbs. d. Compare the results of (a) and (c). What conclusions do you reach?
Answers: 1
Mathematics, 21.06.2019 22:30, kaylaamberd
Maria found the least common multiple of 6 and 15. her work is shown below. multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, . . multiples of 15: 15, 30, 45, 60, . . the least common multiple is 60. what is maria's error?
Answers: 1
Mathematics, 22.06.2019 00:30, lacourboud20005
You are riding your bike and notice the square sign above. you mentally draw a straight line from point a to c. describe the angle relationship between dca and bca
Answers: 1
The quality-control manager at a compact fluorescent light bulb (CFL) factory needs to determine whe...
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