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A marketing research firm is interested in determining whether there is difference between households in Chicago and Milwaukee in the degree that they purchase groceries online. The research firm decided to randomly sample household earners with income of $50,000 per year in the two cities and ask them had they purchased groceries online during the last year. The results of the survey showed that of the 150 sampled in CHicago 19 and yes which in Milwaukee of 135 sampled 10 said yes. 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. Do a formal Hypothesis test. (all 7 steps) Interpret the meaning of p value.
If the process mean and standard deviation remain constant, what proportion of the output from this process will be defective?
Consider a random sample of size n from a normal distribution, Xi ~ N(m,9). a) Find the CRLB for the variances of unbiased estimators of m. b) Is the MLE, m(hat) = X(bar), a UMVUE of m?
Find the optimal order quantity.
Question: If the regression line is drawn as Y = C + 1075x, when X was 2 and y was 239, given that the intercept was 11. Calculate the residual
A sample of patients for one busy primary care practice is used as the comparison group. What is the research design and its variables?
He notices that 21 of the throws come up 7. State the null and alternative hypothesis, and find the P-value of his observations.
Identify a business research topic and define the research questions for the identified problem or opportunity
If absolute value of test statistic is less than critical value in hypothesis test decision is to?
State the statistical assumptions of this test Using the data set you have selected, select independent and dependent variables.
1. State the null and research hypotheses
Find the probability that you will (a.) make your first sale on your fifth call, (b.) make your sale on the first, second or third call, and (c.)do not make a sale on your first three calls.
one measure of the risk or volatility of an individual stock is the standard deviation of the total return capital
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