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A study was designed to compare variability of male and female diastolic blood pressure. The null hypothesis was that the population standard deviation were equal versus the alternative that they were not equal. State the critical region, alpha 0.05 F*, and the conclusion if the following sample were observed Male n=25, s=9.9 Females n=25 and s =8.7
At.05 level of significance, is there sufficient evidence to conclude that difference exists between proportion of cats and proportion of dogs which sleep more than 10 hours per day?
Create a scenario where the binomial probability formula could be used to determine the probability of some number of successes, x, in some given number of trials,n.
What proportion of sample means would be between 1.31 and 1.33 inches?
Think about a density curve that consists of two line segments. The first goes from the point (0, 1) to the point (0.7, 1). The second goes from (0.7, 1) to (0.9, 2) in the xy-plane. What percent of observations fall below 0.70?
The null hypothesis is that the distribution of mother's educational level is the same for both treatment groups. The value of the chi-square statistic is 7.422. Evaluate the P-value
Determine the 95% confidence interval for your estimate what data have you utilized as the basis of your predictions what suppositions have you made.
Calculate the mean, mode and median of the grouped data derived from the frequency distribution above. Compare the results obtained from
How large a sample should be taken if the desired margin of error is?
Did you find any outliers on the dependent variables that were due to errors of coding? If so, what and why? How would you correct an error of coding?
Draw a scatterplot indicating a strong negative relationship between the variables pf income and mental illness. Be sure to label the axes correctly.
Must the company replace old truck? If so which of new trunks must they use? Describe in detail.
Construct a 95% confidence interval estimate for the population proportion of adults who report that e-mails are easy to misinterpret.
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