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Suppose that you measure the time it takes to download the video from internet
A. Critically discuss why the dowload is a continous numerical varaible
B. Critically discuss why the download time is a ratio scaled variable
Based on this sample information find out what percent of variation in starting salaries is described by GPA, and find out the equation that would forecast salary from GPA. Give a scatter plot.
The Price-to-Earnings ratio (P/E) of a publicly listed profit-making company is defined as the ratio of the stock price of the company to the earnings per share.
Set up hypothesis and two-tailed decision rule for right mean using 5% level of significance. Hypothesis for a two-tailed decision is?
What is our decision regarding differences between observed and expected frequencies if critical value of chi-square is 9.488 and computed value is 6.079.
Four young children were monitored closely over a period of several weeks to measure how much they watched violent television programs and their amount of violent behavior toward their playmates.
Using the simple test of independence (described in the lecture), decide if the events high calorie and high fiber are independent or dependent. Show your work.
Calculate the population mean and population standard deviation.
What is the probability that the drug will be effective for 2 hours or less?
Where S, A, and R are measured in dollars per week. Vanguard's marketing director is comfortable using parameter estimates that are statistically significant at the 10% level or better.
Below you are given a partial computer output based on a sample of 21 observations, relating an independent variable (x) and a dependent variable (y).
What is the standard error of the difference between the means?
The owner of a local golf course wanted to determine the average age of the golfers that played on the course. In a random sample of 30 golfers that visited his course, the sample mean was 48.34 and the standard deviation was 9.327. Calculate a 90..
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