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For a population with a mean of μ = 60 and a standard deviation of σ = 24, find the Z score corresponding to each of the following samples.
a. M = 63 for a sample of n = 16 scores
b. M = 63 for a sample of n = 36 scores
c. M = 63 for a sample of n = 64 scores.
A student team examined parked cars in four different suburban shopping malls. One hundred vehicles were examined in each location. Research question: At α = . 05, does vehicle type vary by mall location?
Perform a chi-square test on the following data:
Write down the probability of that the median of the sample or average medians is greater or more than 320 minutes?
Using the p- value approach, test the hypotheses at the 5% level of significance.
Draw the suitable 2x2 table, compute and interpret suitable measure of association.
The 95% prediction interval for a new patient with a 2-day cholesterol level of 220 is
Perform a posthoc test that is suitable if we assume that group 7 is a control group and that the other are different treatment groups and that we are only interested in finding significant treatments, not to compare them.
Why is estimating a multiple regression model just as easy as bivariate regression?
To test whether there is significant mean difference between two groups using independent sample t test.
The Kruskal-Wallis rank test is a nonparametric replacement - The Wilcoxon rank sum test tests a null hypothesis
Draw two pie charts, which allow the total yearly exports to be compared. Explain the trend in the export of fish as shown in the two pie charts.
The number of bombardment necessary to achieve the disintegration of a certain nucleus is assumed to have the distribution above. In one sequence in which b bombardments are available, of these have already failed to disintegrate the nucleus. What..
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