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A test is made of H0: u = 69 versus H1: u /= 69. A sample size n = 72 is drawn and X= 70. The population standard deviation is 27. Compute the value of the statistic Z.
Find the expected value of the number of tests taken.
What type of test is described below and can you provide the null and alternate hypothesis? Using an old manufacturing process.
How do I find T, S and B multiples if g=2,5,and 10 pairwise comparisons are to be made with a 95 percent family confidence coefficient
In a random sample of 150 freshman applications received thus far, 67 of the applicants request financial aid. Is there evidence that the proportion of next year's freshmen class needing financial aid has increased?
a survey of 25 randomly selected customers found the ages shown in years. the mean is 32.56 years and the standard
What is the response variable?
A film alliance used a random sample of 50 U.S. citizens to estimate that the typical American spent 78 hours watching videos and DVDs last year. The standard deviation of this sample was 9 hours.
let x be the amount of time in minutes that a particular san francisco commuter must wait for a bart train. suppose
the average hourly wage of workers at a fast food restaurant is 6.50hr with a standard deviation of 0.45. assume that
What is the probability that a single randomly selected juror from Hidalgo County is Mexican-American? Explain briefly. What is the probability a single randomly selected juror is not Mexican-American? Explain briefly.
Determine whether a normal distribution or a t-distribution should be used or whether neither of these can be used to construct a confidence interval.
Find that a random sample of 14 similar cars has a mean of price of $19,850 with a standard deviation of $1084. Is there enough evidence to reject the salesman's claim at "alpha" = 0.05?
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