Manufactures precision special-alloy steel shafts

Assignment Help Basic Statistics

Reference no: EM13965379

A company that manufactures precision special-alloy steel shafts claims that the variance in the diameters of shafts is no more than 0.0003. A random sample of 10 shafts gave a sample variance of 0.00027. At the 5% level of signi?cance, test whether the company's claim can be substantiated.

Reference no: EM13965379

Questions Cloud

How toomers style and literary approach differ in each work : Read "Winter on Earth" alongside the excerpt from Cane (1923) in the anthology. Discuss how Toomer's style, themes, and literary approach differ in each work.

Time required for balls to attained a temperature of 150 : Calculate the time required for the balls to attained a temperature - suddenly placed in a control environment in which the temperature is maintained at 100oC.

Calculate the y-component of the velocity of the particle : A particle with a charge of -5.90 * 10^-9 C is moving in a uniform magnetic field B(vector) = -(1.25 T) k (hat). The magnetic force on the particle is measured to be F(vector) = -(4.00 * 10^-7 N) i(hat) + (7.60 * 10^-7 N) j(hat). Are there compone..

Annual expenditure per consumer unit : Assuming that the average annual expenditure of all consumer units was $30,692 in 1994, test at the 5% signi?cance level whether the annual expenditure per consumer unit had really increased from 1994 to 1995.

Manufactures precision special-alloy steel shafts : A company that manufactures precision special-alloy steel shafts claims that the variance in the diameters of shafts is no more than 0.0003. A random sample of 10 shafts gave a sample variance of 0.00027. At the 5% level of signi?cance, test wheth..

Draw a box plot and normal plot for data : Do the data provide suf?cient evidence to indicate that the mean Hb level for children with chronic diarrhea is less than that of the normal value of 14.6 g/dL? Test the appropriate hypothesis using α = 0.01. Draw a box plot and normal plot for th..

List at least five items that should take to every interview : If a job candidate receives a job offer while other interviews are still pending, how should he or she ask the employer for a time extension?

What was the cost of raw materials put into production : What was the cost of raw materials put into production during the year? How much of the materials in (1) above consisted of indirect materials?

Test for the normality of the data : (a) Test for the normality of the data (b) Do the IQs of students at the school run above the national average at α = 0.01?

User Account

All Pages