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Identify each variable in the formula for the binomial probability density function. Also, explain what the fraction: n! / (n-x)!x! calculates.
Create the 90% confidence interval for mean score of all such subjects. You may suppose scores are usually distributed.
A computer software developer would like to use the number of downloads (in thousands) for the trial version of his new shareware to predict the amount of revenue
Confirm that these statements are accurate by finding the geometric mean rate of increase.
Given that Z is a standard normal random variable. What is the value of Z if the area to the left of Z is 0.9382?
Determine what analysis would you do on each problem (i.e., one-sample z-test, one-sample t-test, proportion test, two-sample independent t-test, or paired test)?
At a certain pizza parlor, 45% of the customer's order a pizza containing onions, 38% of the customer's order a pizza containing sausage, and 79% order a pizza containing onions or sausage
The president of an agency specializing in public opinion surveys claims that approximately 70% of all people to whom the agency sends questionnaires responds by filling out an returning the questionnaire.
First explain what the Gini coefficient is and what hypothetical Gini values of 0 and 1 mean. Sort the data by the Gini coefficient in 2000 and look at the list of countries.
Determine the best replacement policy over the next five years?
Discuss whether the percent distribution of the cross-tab and chi-square supports/does not support the researcher's hypothesis.
Let x be average number of employees in group health insurance plan and y be average administrative cost as percentage of claims. Determine sample correlation coefficient.
You want to determine if the sample result gives good evidence that the true amount of the compound is not equal to 2 gms. Carry out the test, find the P-value, and state your conclusion.
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