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A researcher has a series of Likert-scaled items and a measure of frequency of absenteeism. He uses each of the Likert-scaled items in a separate bivariate correlation with absenteeism without testing for the assumption of linear relationships. Is this ethical?
Smith bicycled 45 miles going east from Durango, and Jones bicycled 70 miles. Jones averaged 5 miles per hour more than Smith, and his trip took one-half hour longer than Smith's. How fast was each one traveling?
Test the hypothesis. Will you reject or not reject the null hypothesis at α = 0.05
A box of nine golf gloves contains two left-handed and seven right-handed ... box without replacement, what is the probability that- (X) both gloves are right handed and (Y) one left-handed and one ... If two gloves are randomly selected with repl..
Use either Linear Programming module or Transportation module of Cd to minimize the shipping costs involved in move.
Determine the probability of a positive economic trend given an increasing employment. Are employment and economic trend independent?
A study concluded that waist to hip ratios are a better predictor of 5-year survival than more traditional height-to-weight ratios.
Test this conjecture with formal hypothesis test, by using a 5% significance level. Find out the p-value for hypothesis test.
Puret grinder has required repair service according to the following distribution. Compute the mean, for the following probability distribution of the number of breakdowns per week.
The test statistic for a two-sided significance test for a population mean is z = -2.12. What is the corresponding P -value?
Is a body temperature of 99.00F unusual? Why or Why not? d)fifty adults are randomly selected. What is the likelihood that the mean of their body temperatures is 97.98F or lower?
A DVD rental store wants to know what proportions of its customers are under age 21. A simple random sample of 500 customers was taken, and 375 of them were under age 21. Presume that the true population proportion of customers under age 21 is 0.6..
Testing for population mean - What happens as you use different levels of significance? Different values of the standard deviation?
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