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For a particular sample of 80 scores on a psychology exam the following results were obtained. First 52 3rd quartile =78 stndard deviation 7 range = 45 mean 65 median 5 mode 76 midrange 62 what score was earned by more students than any other score why what was the highest score earned on one exam what was the lowest according to chebysher's theorem how manystudents scored between 37 and 93. Assume that the distribution is normal. Based on empirical rule how many students scored between 51 and 79.
Develop a joint probability table for these data. If a student goes full time, determine the probability that school quality is first reason for selecting a school?
We code middle-aged Americans as 1 and senior citizens as 0, the logistic regression model for senior citizens
Four percent of DVD players manufactured by an electronics company are defective. Suppose six DVD players are randomly selected from the production line. Each DVD player is determined to be defective or non-defective.
Under older Federal Aviation Administration rules, airlines had to estimate the weight of a passenger as 185 pounds. That amount is for an adult traveling in winter, and it includes 20 pounds of carry-on baggage.
If the decision in the hypothesis test of population correlation is to reject the null hypothesis, what can we conclude about the population correlation.
Perform Repeated Measures ANOVA also calculate PRE. An educational study uses a simple pre-post design to assess the value of a computer tutor for solving inequalities.
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
A sample of 46 bars is taken and their mean length is determined to be 51 centimeters with a standard deviation of 3.6 centimeters. Using a .01 significance level, test the retailers claim that the population mean is less than 50 centimeters.
For following set of scores, prepare a frequency distribution, a histogram, and a stem-and-leaf display for each variable. Also calculate the mean, the median and the standard deviation of each score.
If a 99% confidence interval is calculated to estimate the difference between the average hourly rates for each type of graduate, what is the margin of error? Assume both population standard deviations are equal.
30% of college freshmen support increased military spending. If 12 college freshmen are randomly selected, find the probability that more than 5 selected students support increased military spending.
Assume that each shipment contains a random sample of bearings. a. What is the probability that a given shipment is acceptable?
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