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We have the following data: sample mean ¯x= 42.6, sample deviation s= 2, number of samples n= 33 and the null hypothesis is μ0= 42.
(a) Compute the t-statistic.
(b) At the 95% confidence level, do we reject or accept the null hypothesis?
(c) What is the probability that the sample mean is at least this far away from the population mean, given the null hypothesis holds?
(d) At the 95% confidence level, what range of means would be consistent with this data?
(e) At the 99% confidence level, what range of means would be consistent with this data?
(f) At the 90% confidence level, what range of means would be consistent with this data?
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if fxy x y ky ? x is a joint density function over the triangular region with vertices at 00 01 and 11 then what is
Make a scatter plot of Y and X1 using Word. To do this click on insert and then chart. Click on X Y (Scatter). Enter the data from the table.
Do these data provide suffiient evidence to establish that the site is acceptable? Use = 0:05. What are the consequences of Type I and Type II errors? Which error is more expensive to make?
a medical researcher wishes to determine the percentage of females who take vitamins. he wishes to be 95 confident that
What type of experimental design was used?- Explain why the traditional analysis of variance formulas are inappropriate for the analysis of these data.
A researcher computes the regression equation for a sample of n = 25 pairs of scores, X and Y values. If an analysis of regression is used to test the signifi- cance of the equation, what are the df values for the F-ratio?
according to the mendelian theory of inherited characteristics a cross fertilization of related species of
Find the minimum sample size required to estimate the percentage of college students who use loans to pay for college.
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The consultant is given a sample of 225 batteries to test. A. Calculate the standard error of the mean.
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