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Conduct the following test at the α=0.01 level of significance by determining ?(a) the null and alternative? hypotheses, ?(b) the test? statistic, and? (c) the? P-value. Assume that the samples were obtained independently using simple random sampling.
Test whether p1≠p2. Sample data are x1=28?, n1=254?, x2=36?, and n2=302.
(a) If a randomly selected adult is is positive based on the test, what is the probability that the person has the disease? (b) Is this a good diagnostic test?
However, the mean ounces of ?ll μ may change from day to day, because of change of operator or adjustments in the machine. If n = 55 observations on ounces of ?ll are taken on a given day, ?nd the probability that the sample mean will be within 0...
The NAEP test was also given to a sample of 1077 women of ages 21 to 25 years. Their mean quantitative score was 275. Take it as known that the standard deviation of all individual scores is = 60.
If the salary and compa mean tests in questions 2 and 3 provide different results about male and female salary equality, which would be more appropriate to use in answering the question about salary equity - how do you interpret the results and what ..
A certain unnamed statistics author and his two sons played golf at four different courses with the following scores:
The Patricia Garcia Company is producing seven new medical products. Each of Garcia's eight plants can add one more product to its current line of medical devices.
Using a standard deck of 52 cards, he randomly "cuts" the deck twenty times and records the suit of the top card. Calculate the degrees of freedom
How many branch offices were involved in the study and compute the F statistic and test the significance of the relationship at a .05 level of significance.
A simple random sample of 10 households is selected from a population of 100 households. The numbers of people in the sample households are 2, 5, 1, 4, 4, 3, 2, 5, 2, 3.
a statistician selected a sample of 16 accounts receivable and determined the mean of the sample to be 5000 with a
suppose fx y1 amp gx y xy 0lt x lt1 0lt ylt1 determine the most powerful test of size alpha .05 of hyp x y f vs. alt x
For a sample of 20, what t-value would you use to establish the 98th percentile?
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