Can firm claim that average life time is of given value

Assignment Help Basic Statistics

Reference no: EM13126029

A firm producing light bulbs wants to know if it can clam that its light bulbs last 1000 hours to answer this question the firm takes a random sample of 100 bulbs and finds the average life time for this sample is 970 hour and the standard deviation is 80 hours. Can the firm clam that the average life time is 1000 hours at the 5% level of significance?

Reference no: EM13126029

Questions Cloud

Write a summary on three psychotherapies : Write a summary on three psychotherapies. Discuss the main tenets of each therapy, their effectiveness in treating psychological disorders, and their strengths.

What is the after-tax cash flow on the sale : Suppose the Quick Towing Company purchases a new tow truck. The old truck had a book value of $1,000 and was sold for $1,420. If Quick Towing is in the 34 percent marginal tax bracket, what is the tax liability on the sale of the truck?

Time value of money concepts : Write a 200- to 300-word description of the four time value of money concepts: present value, present value of an annuity, future value, and future value of annuity.

Find the solution to physical chemistry : The solution to physical chemistry, A laser used to read CDs emits red light of wavelength 700 nm. How many photons does the laser emit per second

Can firm claim that average life time is of given value : Finds the average life time for this sample is 970 hour and the standard deviation is 80 hours. Can the firm claim that the average life time is 1000 hours at the 5% level of significance?

Solve the work function problem : The work function for Cu metal is 4.80 eV. If a piece of Cu is bombarded by violet light (λ = 4,000 Å), will electrons be ejected? "YES" or "NO" with supporting argument/calculation.

Compute the issue price of each of the following bonds : $10,000,000 face value, serial bonds repayable in 40 equal semi-annual installments of $500,000, which includes coupon payments and repayment of principal, for 20 years, priced on the market to yield 6% compounded semi-annually. Round your answer ..

Should ira follow her friends advice : A friend has suggested that Ira sell the stock and contribute the 20,000 in proceeds rather than contribute the stock. Should Ira follow her friends advice? Why?. Assume the fair market value is only $13,000. In this case, should Ira follow the fri..

Valencies and syntactic roles and basic phrase : QUIZZIE 1 VALENCIES AND SYNTACTIC ROLES QUIZZIE 2 Basic Phrase Structures

User Account

All Pages