Perform a two-tailed test for lifetime of light bulbs

Assignment Help Basic Statistics

Reference no: EM13134137

A manufacturer claims that the mean lifetime, , of its light bulbs is months. The standard deviation of these lifetimes is months. Thirty-six bulbs are selected at random, and their mean lifetime is found to be months. Assume that the population is normally distributed. Can we conclude, at the level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from months?

Perform a two-tailed test.

Carry your intermediate computations to at least three decimal places, and round your responses as specified in the table. (If necessary, consult a list of formulas.)

Reference no: EM13134137

Questions Cloud

Triangle and diagonals of rhombus : The measures of the angles of a triangle are in the ratio of 2:3:4. What is the measure of the smallest angle? Each side of a rhombus measures 10 inches. If one diagonal of the rhombus is 12 inches long, what is the length of the other diagonal?

What will be the amount of each payment : You purchase a boat fpr $35,000 and pay $5,000 down. You also agree to pay the rest over the next 10 years in10 equal end of the year payments plus 13% compound interest on the unpaid balance. What will be the amount of each payment?

What is the heat capacity of the calorimeter : At constant volume, the heat of combustion of a particular compound is -3973.0 kJ/mol. When 1.481 g of this compound (molar mass = 172.71 g/mol)

Find an article of pertinence to either current tax issues : Find an article of pertinence to either current tax issues, policies, or laws, and post a link to that article in a discussion thread. Summarize the article you chose to begin the discussion.

Perform a two-tailed test for lifetime of light bulbs : Can we conclude, at the level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from months? Perform a two-tailed test.

Analyze income statement accounts related to business cycle : Include substantive tests of transactions, analytical procedures, and tests of account balances in your audit program. Be sure to identify the procedures necessary to analyze the income statement accounts related to your selected business cycle.

Appropriate international business : The first area of the assignment is to specify an appropriate international business strategy that can provide the basis for exploiting the new or existing overseas business market

Define the number of different constitutional isomers : The number of different constitutional isomers that can be drawn for C2H4Br2 is equal to

What is the final temperature of the water : A 21.15 g piece of iron and a 25.05 g piece of gold at 100.0 degreesC were dropped into a 720.0 mL of water at 18.45 degreesC.

User Account

All Pages