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A local university reports that 3% of their students take their general education courses on a pass/fail basis. Assume that fifty students are registered for a general education course.
a. What is the expected number of students who have registered on a pass/fail basis?b. What is the probability that more than three are registered on a pass/fail basis?c. What is the probability that less than four are registered on a pass/fail basis?
If the sum of the squared deviations about the regression line is SSE = 40.0, what is the coefficient of determination?
Computing the probability values for the given discrete distribution - What is the probability that you did not shake hands with a person with the flu
A new company is manufacturing light bulbs. The CEO claims that the average light bulb lasts 260 days. A researcher selects 25 bulbs for testing. The sample bulbs last an average of 250 days with a standard deviation of 20 days.
Discuss the concept of 'extended family' with Asian and Latino ethnic minorities. Discuss the strengths and weaknesses regarding delivery of social and health services to these groups.
Complete the ANOVA table. Carry out a test of hypothesis on each of regression coefficients. Could you delete any of the variables?
Using multiple linear regression, compute the regression equation for the following data in Excel.
Suppose you take a sample of size 100 of test scores and find that the mean is 63. What is the z-score corresponding to this sample mean?
Using the original data, test at the 5% significance level that the population standard deviation of studying times is greater than 4 hours.
What is the probability that the mean annual precipitation during 49 randomly picked years will be less than 101.8 inches?
The Graduate Management Admission Council, who administers the test, claims that the mean total score is 529. Suppose a random sample of 8 students took the test, and their scores are given below. 699, 560, 414, 570, 521, 663, 727, 413 Use α = .05..
Given that we have collected pairs of observations on two variables X and Y , we would consider fitting a straight line with X as an explanatory variable if:
An article in USA Today stated that "Internal surveys paid for by directory assistance providers show that even the most accurate companies give out wrong numbers 15% of the time."
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