Test hypothesis for variance

Reference no: EM1319811

Question: The Stewart aviation products company uses a new production method to manufacture aircraft altimeters. A simple random sample of 81 altimeters is tested in a pressure chamber, & the errors in altitude are recorded as positive values [for readings that are too high] & negative values [for readings that are too low]. The sample has a standard deviation of s=52.3 feet
At the .05 significance level, test the claim that the new production line has errors with a standard deviation different from 43.7 feet. which was the standard deviation for the old production method. Suppose that the sample is drawn from a normally distributed population.

Reference no: EM1319811

Questions Cloud

Find the probability that the strike vote is rejected : A union strike vote is scheduled for tomorrow, and it looks close. You expect 100 people to vote, and the probability that a typical individual will vote to strike is estimated to be 0.4. Suppose that the voters make their decisions independent from ..

Find the mean & the standard deviation of the total amount : Compute the mean & the standard deviation of the total amount that this investor in 1 year from these four investments.

Find the probability of observing : Find the probability of observing

The strategy that maximizes the campus bookstore earnings : The strategy that maximizes the campus bookstore earnings.

Test hypothesis for variance : Test hypothesis for variance.

Test the hypothesis for single proportion : Test the hypothesis for single proportion.

Test the hypothesis : The following random sample was selected from a normal distribution: 10, 12, 12, 15, 13, 15 & 16.Test the hypothesis that the true mean exceeds 12. [Use α =.01]

Find the p value & explain its meaning : A recent study reported that college students study for an average of four hours per day. You believe this figure is too large & you decide to conduct your own test. Find the p value & explain its meaning.

Determine the population mean : Determine the population mean

User Account

All Pages