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Suspecting that television repair shops tend to charge women more than they do men, Emily disconnected the speaker wire on her portable television and took it to a sample of 12 shops. She was given repair estimates that averaged $85, with a standard deviation of $28.
Her friend John, taking the same set to another sample of 9 shops, was provided with an average estimate of $65, with a standard deviation of $21.
Assuming normal populations with equal standard deviations, use the 0.05 level in evaluating Emily's suspicion. Using the appropriate statistical table, what is the approximate p-value for this test?
Assume that the length X in minutes of a regular season NBA game is normally Distributed with X~N (µ X , σ 2 X );
the fill volume of an automated filling machine used for filling cans of carbonated beverage is normally distributed
The time between the successive renewals, for a certain renewal process {N(t),t ≥ 0}, is a continuous random variable whose probability density function is the following:
1 joes grandfather on his mothers side was a lizard man on a circus sideshownbsp the result of rare x-linked recessive
the mean and standard deviation of the max loads supported by 60 country bridges in texas is 11.09 tons and 0.73
Give a 99% confidence interval for the mean increase in pay for all corporate CEOs.
there are 40 students in an elementary statistics class. on the basis of years of experience the instructor knows that
An urn contains 9 white balls and 8 green balls. If Juan choose 9 balls at random from the urn, what is the probability that he will select 5 white ballight and 4 green balls? Round your answer to 3 decimal places.
Construct a 95% confidence interval for the true proportion of the market who still refuse to visit any of the restaurants in the chain three months after the event.
What is the minimum possible time required for completing the project?
If there are 81 fraternity members, how much should they buy so that using the normal approximation they are 93.32% sure they will not run out?
Create the table for frequency distribution that has 16 class intervals of width 1 inch. Utilize 61.5 inches as lower limit of first interval and 62.5 as upper limit.
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