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A random sample of 25 households finds that an average of 2.3 people reside in each house (the standard deviation is 0.35). With a 95% confidence level, what is your estimation of the population average?
Make a graph to display the distribution of doctors per 100,000 people.Write a brief description of the distribution.Are there any outliers?If so, can you explain them.
Compute the coefficient of correlation. Evaluate the strength of the relationship by computing the coefficient of determination.
Construct a 95% Confidence interval for diffrence between the two populations. At the alpha equals .10 level of significance, can the firm conclude that Chicago households buy more online than Milwaukee.
A statisitcs professor plans classes so carefully that the lengths of her classes are uniformly distributed between 45.0 and 55.0 minutes. Find the probability that a given class period runs less than 50.5 minutes.
The population standard deviation is σ2 = 7. Test that the population means differ using a 1% significance level.
Test for significant differences among weight losses for the five diets, and perform all pair wise comparisons using:
Is this adage correct for baseball? Out of 2425 regular season games in 2002, the home team won 1314 of them. Does the home field advantage apply in baseball?
Teacher asked each of her students how many novels they had read in previous six months. Results are shown below. Create the frequency table for the number of novels read.
What is the 95% confidence interval for the difference between the mean prices of the two models?
Carry out suitable multiple comparison procedure to determine the source of the difference.
The following regression equation and correlation coefficient were calculated using minitab for the bivariate data age of men and their weight.
There is evidence that the two processes yield different average errors. Assume that the population standard deviations are equal. What is the degrees of freedom?
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