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A survey of a simple random sample of university alumni finds that six months after graduation, 75 of the 100 liberal arts majors and 45 of the 50 business administration majors had found employment within their field of study. Is the difference significant? Use a hypothesis test to justify your answer.
Calculate the correlation coefficient and test for significance and calculate the Pearson product-moment correlation coefficient and test for significance
It is a striking fact that the first digits of numbers in legitimate records often follow a distribution known as Benford's Law, shown below.
The length of a particular telemarketing phone call, x, has an exponential distribution with mean equal to 1.5 minutes.
What is the probability that 30 or more paid by credit? d. What is the probability that less than 12 paid by credit? e. What is the probability that 12 to 30 paid by credit?
Determine the strength of the causal relationship between monthly sales and new home construction by using correlation.
telephone calls arrive at the information desk of a large computer software company at a rate of 15 per hour.a what is
Develop the estimated regression equation that can be used to predict the closing price given the value of Period At the .05 level of significance, test for any positive autocorrelation in the date.
for each of the following variables determine whether the variable is categorical or numerical. if the variable is
A manufacturer wants to increase the shelf life of a line of cake mixes. past records indicate that the average shelf life of the mix is 216 days. after a revised mix has been developed, a sample of nine boxes of cake mix gave these shelf lives (i..
If we decrease the level of significance a (alpha) from 0.05 to 0.01, that means we are: More willing to accept a type II error;
q1. you compute the components of a one-way anova table and you find msb 12 and msw 2. the critical value for the f
what is the probability that the mean of a random sample will be equal to or greater than the 97.5 percentile of its
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