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Question: Construct a regression model for predicting total charges from length of stay for DRG 105.
a. State the null and alternative hypotheses and alpha level.
b. Prepare a scatter diagram with the regression line for the two variables.
c. What are the r and r2? What is the importance of the r and r2 results?
d. What is the regression equation?
e. What are your conclusions?
a. State the null and alternative hypotheses for a contingency table test for independence of gender.
Forty percent of the sample wanted more local news. What is the 99% confidence interval for the proportion of readers who would like more coverage of local news?
how many chocolate chip cookies will he need to sample to estimate the mean to within 2, what is a 99% confidence interval for the average number of chips per cookie?
Elected officials in a California city are preparing the annual budget for their community. They would like to estimate how much their constituents living.
Why do you think measurements with a bell-shaped distribution are so common in nature? For example, why do you think women's heights are distributed.
Make sure to superscript all exponents. If you believe that a polynomial is not factorable, label it as prime. Show all stages of factoring separately
An eyeglasses manufacturer and retailer wants to determine the demand for prescription eyeglasses in its marketing region.
She also included an untrained control group. The dependent variable was the amount of information retained three months after training. Analyze the data in the table with an ANOVA, HSD tests, and f.
Estimate the regression parameters, the infant mortality rate for a country with a net food supply of 2900 calories per person per day, and draw the regression line on the same graph with the scatter diagram.
suppose that a flaw in a certain computer chip installed in computers was discovered that could result in a wrong
The customers arriving between 0 and 1 have to wait until the store opens. Suppose X is the total times that these customers have to wait. Calculate Var(x).
Predicting the winner. There are 11 teams in the Big Ten athletic conference. Here's one set of personal probabilities for next year's basketball champion.
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