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A pharmaceutical company reports that in testing whether their new cancer drug increases the mean survival time for certain types of cancer? patients, their results were statistically significant. Suppose that in testing H0?: μ=100 versus Ha?: μ >100 they obtain x=101 and s=5 for a random sample of 400 patients. Find the test statistic and discuss the practical significance of the test.
A. t=-?4; although the test is statistically? significant, the increase of 1 day is not practically significant.
B. t=?4; since the? P-value is less than? 0.05, the test is practically significant.
C. t=-?4; since the? P-value is less than? 0.05, the test is practically significant.
D. t=?4; although the test is statistically? significant, the increase of 1 day is not practically significant.
Reflect on radical expressions and their applications, and then consider how you might apply radical expressions to your daily life. Explain this application,
a simple random sample of 100 postal employees is used to test if the average time postal employees have worked for the
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Probability based on a random experiment - What is the probability, without looking in the drawer
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The following regression equation and correlation coefficient were calculated using minitab for the bivariate data age of men and their weight.
Moreover, you are given that e-Nδ = 0.36. If Z is the present value of the benefits, calculate FZ (z) for all nonnegative values of z.
To judge whether it was worthwhile to fit a parabola in Exercise 84 and not just a straight line, test the null hypothesis β2 = 0 against the alternative hypothesis β2 0 at the 0.05 level of significance.
Suppose four heads appeared face up on four tosses of a coin. what is the probability that a head will appear face up in the next toss of the coin?
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