Question

The quality-control manager at a compact fluorescent light bulb factory need to determine whether the mean...

The quality-control manager at a compact fluorescent light bulb factory need to determine whether the mean life of a large shipment of bulbs is equal to 7,500 hours. The population standard deviation is 1,000 hours. A random sample of 64 bulbs indicates a sample mean life of 7,250 hours.

1. Set the hypothesis, for matching this statement “Is there evidence that the mean life is difference from 7,500 hours?”

2. At 95% confidence, what is the estimation of population mean life of the bulbs?

3. Compute p-value.

4. Find the solution, by using level of significance = 0.05.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The quality control manager at a compact fluorescent light bulb (CFL) factory needs to determine whether...
The quality control manager at a compact fluorescent light bulb (CFL) factory needs to determine whether the mean life of a larger shipment of CFL is equal to 7,500 hours. The population standard deviation is 1,200 hours. A random sample of 64 CFLs indicates a sample mean life of 7,250 hours. At the 0.05 level of significance, is there evidence that the mean life is different from 7,500 hours?
The quality-control manger at a compact fluorescent light bulb (CFL) factory needs to determine whether the...
The quality-control manger at a compact fluorescent light bulb (CFL) factory needs to determine whether the mean life of a large shipment of CFLs is equal to 7,500 hours. The population standard deviation is 1,000 hours. A random sample of 64 CFLs indicates a sample mean life of 7,250. a) At the 0.05 level of significance, is there evidence that the mean life is different from 7,500 hours? b) Complete the p-value and interpret its meaning. c) Construct a 95%...
The​ quality-control manager at a compact fluorescent light bulb​ (CFL) factory needs to determine whether the...
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 7,463 hours. The population standard deviation is 100 hours. A random sample of 64 light bulbs indicates a sample mean life of 7,438 hours. a. At the 0.05 level of​ significance, is there evidence that the mean life is different from 7,463 hours? b. Compute the​ p-value and interpret its meaning. c. Construct...
The​ quality-control manager at a compact fluorescent light bulb​ (CFL) factory needs to determine whether the...
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 7,530 hours. The population standard deviation is 92 hours. A random sample of 64 light bulbs indicates a sample mean life of 7,507 hours. a. At the 0.05 level of​ significance, is there evidence that the mean life is different from 7,530 hours?    What is/are the critical values? b. Compute the​ p-value...
the quality control manager at a compact fluorescent light bulb factory needs to determine whether the...
the quality control manager at a compact fluorescent light bulb factory needs to determine whether the mean life of a large shipment of CFLs is equal to 7506 hours. the population standard deviation is 900 hours. a random sample of 81 light bulbs indicates a sample mean life of 7256 hours A at the 0.05 level of significance, is there evidence that the mean life is different from 7506 hours B compute the p value and interpret its meaning C...
The​ quality-control manager at a compact fluorescent light bulb​ (CFL) factory needs to determine whether the...
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 7,499 hours. The population standard deviation is 100 hours. A random sample of 64 light bulbs indicates a sample mean life of 7,474 hours. a. At the 0.05 level of​ significance, is there evidence that the mean life is different from 7,499 hours? b. Compute the​ p-value and interpret its meaning. c. Construct...
The​ quality-control manager at a compact fluorescent light bulb​ (CFL) factory needs to determine whether the...
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 7540 hours. The population standard deviation is 735 hours. A random sample of 49 light bulbs indicates a sample mean life of 7,288 hours. Construct a​ 95% confidence interval estimate of the population mean life of the light bulbs? ___ <= MU <= ___ (Round to the nearest whole number as​ needed.)
The​ quality-control manager at a compact fluorescent light bulb​ (CFL) factory needs to determine whether the...
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 7,538 hours. The population standard deviation is 92 hours. A random sample of 6464 light bulbs indicates a sample mean life of 7,515 hours. a. At the 0.05 level of​ significance, is there evidence that the mean life is different from 7,538 hours? b. Compute the​ p-value and interpret its meaning. c. Construct...
The​ quality-control manager at a compact fluorescent light bulb​ (CFL) factory needs to determine whether the...
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 7520 hours. The population standard deviation is 840 hours. A random sample of 64 light bulbs indicates a sample mean life of 7,258 hours. a. At the 0.05 level of​ significance, is there evidence that the mean life is different from 7520 hours? b. Compute the​ p-value and interpret its meaning. c. Construct...
The operations manager at a compact fluorescent light bulb (CFL) factory needs to estimate the mean...
The operations manager at a compact fluorescent light bulb (CFL) factory needs to estimate the mean life of a large shipment of CFLs. The manufacturer’s specifications are that the standard deviation is 1,000 hours. A random sample of 64 CFLs indicated a sample mean life of 7,500 hours. a. Construct a 95% confidence interval estimate for the population mean life of compact fluorescent light bulbs in this shipment. b. Do you think that the manufacturer has the right to state...