SOLUTION: Write the claim mathematically, identify Ho and Ha, find critical values and rejection regions. Use them to answer the question. A light bulb manufacture guarantees that the mean

Question 459097: Write the claim mathematically, identify Ho and Ha, find critical values and rejection regions. Use them to answer the question.
A light bulb manufacture guarantees that the mean life of bulbs is at least 750 hours with a standard deviation of 60 hours. At alpha = 0.02, do you have enough evidence to reject his claim?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
We need to know information about the sample. We would need to know the sample mean and how many items are in the sample.
RELATED QUESTIONS
A company that makes cola drinks states that the mean caffeine content per one 12-ounce... (answered by stanbon)

22. A medical researcher says that at least 27% of adults are smokers. In a random sample (answered by ewatrrr)

A restaurant association says the typical household spends a mean of $3568 per year on... (answered by stanbon)

I need to find the critical value (Zc) and be able to show the rejection and... (answered by stanbon)

A medical researcher say that less than 25% of U.S. adults are smokers. In a random... (answered by Theo)

Determine the critical region and critical values for z that would be used to test the... (answered by stanbon)

Hello I have trouble with these questions, 1) Identify the sample space of the... (answered by stanbon)

I started most of the work but I am not sure if I am doing it right. Please help.... (answered by stanbon)

Find the critical values and rejection region for a 2-tailed test with alpha =... (answered by stanbon)