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Which of the following would be most helpful in assessing the practical significance of a test of hypotheses about a proportion?
A) Test the hypotheses using significance level α = 0.001.
B) Report the P-value of your test.
C) Take another sample and retest just to make sure the results are not due to chance.
D) Construct a 99% confidence interval for the proportion in order to see the magnitude of the proportion.
Assume 1.5% of antennas on new Nokia cell phones are imperfect. For random sample of 200 antennas, determine the probability that: None of the antennas is defective.
Then explain your answer to someone who has never had course in statistics (but who is familiar with mean, standard deviation, and Z scores.)
A manufacturer of billiard balls is testing three additives to the basic plastic. Show the partial ANOVA table
Categorize the following as discrete or continuous random variables.
Their resting heart rates were measured. A partial ANOVA table is given.
In a normal frequency distribution, 32% of the cases:
The random variable X has which of the following probability distributions and What is the probability that no student wins
Find the probability of winning jackpot?
A professor of math refutes the claim that the average student spends 3 hours studying for the midterm exam. Which hypothesis is used to test the claim?
Explain the results plot the original data and the fitted regression equations.
Why is estimating a multiple regression model just as easy as bivariate regression?
Find the value for the correlation coefficient r.
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