Find that given is average life span

Assignment Help Basic Statistics

Reference no: EM131400286

A manufacturer claims that their light bulbs have an average life span that follows a normal distribution with μ = 1,200 hours and a standard deviation of σ = 25.

If you randomly test 36 light bulbs and find that their average life span is X¯ = 1,150, does a .95 confidence interval for μ suggest that the claim μ = 1,200 is reasonable?

Reference no: EM131400286

Questions Cloud

What is your opinion of the risks of self-help groups : Assume you are working with a client that you think could benefit from AA or another self-help group. What could you do to increase the chances that s/he would actually go to a meeting and continue participating? What is your opinion of the risks ..

Important concept related to corporate responsibilities : Here is my other question. An important concept related to corporate responsibilities is stakeholders. Stakeholders are those individuals or groups that have a stake in the success of the organization, and also those who are impacted/affected by t..

Considering today political climate : Considering today's political climate, what types of laws impacting union - employer relations do you think will be enacted?

Were there risks associated with the globalization : You spent the last week reflecting on both your appreciation of Deborah's praise and the success of the organization, and then had a long weekend with your family. As you walk in to work on Monday, all you can think about is how excited you are ab..

Find that given is average life span : If you randomly test 36 light bulbs and find that their average life span is X¯ = 1,150, does a .95 confidence interval for μ suggest that the claim μ = 1,200 is reasonable?

Greatest impact on employment today : Which do you think had the greatest impact on employment today? Why?

Analyze four implications that social class has on schooling : Analyze two to four implications that social class has on schooling, and determine a method of handling these implications in the lesson you have created.

What is the probability of exactly 2 successes : For a binomial with n = 7 and p = .35, what is the probability of exactly 2 successes.- For a binomial with n = 18 and p = .6, determine the mean and variance of X, the total number of successes.

Description of the situation : Production workers at Acme Manufacturing Company are represented by the United Machine Workers Union. There is a valid labor agreement between the parties. Relevant provisions from the contract are provided after the description of the case.

User Account

All Pages