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1. Using the z-table (Table E), find the critical value (or values) for a a = .14 right-tailed test.
1. 0.1406
2. 1.08
3. 0.0557
4. 1.54
2. At a certain university, the average cost of books per student was $400 per student last semester. In a sample of 40 students this semester, their average cost was $430 with a standard deviation of $80. The Dean of Students believes that the costs are greater this semester. What is the test value for this hypothesis?
a. 15.00
b. 2.37
c. 0.38
d. 0.75
Assume that Los Arboles had a special program in place to encourage helmet use. Elucidate to what extent did removal of the outlier improve the fit.
Statistics is science of conducting studies to: Solve a system of equations.
Each party's position must be statistically sound. Include as suitable graphs, computations, and statistical tests.
Find out the operating characteristics for this system.
Calculate the z - scores for the three samples, compare the z score to the t-statistic, is the null hypothesis accepted or rejected?
Illustrate what is the probability all four calls are infact emergencies. Illustrate what is the probability that three or more calls are not emergencies.
Evaluate the performance of this decision.
Either summarize your design or give an appropriate layout with table.
If we assume all the possible random samples of 250 students at this university, 95 percent of the samples should have means among what two numbers.
Develop a linear regression equation for the given data and forecast how much money Robert will win if he spends $30.
According to Bienayme-Chebyshev rule, what percentages of these funds are likely to be within ±2 standard deviation of mean?
Whenever the calculated value of t is equal to or greater than the tabled value of t, for a given number of degrees of freedom, then
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