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A professor is targeting a score of 80 on an exam. His forty-nine students averaged 78 on an exam with s = 7. Are the scores significantly less than 80 at a significance level of 0.05? Show your work and state the conclusion.
When the effect of a level for one factor depends on which level of the other factor is present, use: Select one:
At.01 significance level, is there difference in mean number of times men and women order take-out dinners in month? Determine the p -value?
Is there enough evidence to support the consumer's conjecture at alpha=.10? 7.2 8.1 7.8 7.4 8.0 8.2 8.1 7.9
An experiment was conducted to compare the effectiveness of three training programs, A, B, and C, in training assemblers of a piece of electronic equipment.
You are testing the null hypothesis that there is no linear relationship between two variables, X and Y. From your sample of n=10, you determine that r=0.80.
would this prove that they are exceeding their goal, using = .025?
An insurance representative wants to determine if the proportions of women and men who buy the different policy types are the same. The actual sales results for 50 women and 50 men are
OHIP records show the average length of stay in Ontario hospitals is 5.4 days. A researcher sampled 125 patient records at US hospitals and found that the mean stay was 4.6 days
Find the probability that when 200 reservations are accepted, there are more passengers showing up than there are seats available. Is the probability of overbooking small enough so that it does no happen very often.
Consider the following continuously operation job shop. Inter arrival times of jobs are described as follows: What is the average time for the 10 new jobs?
Compare the effectiveness of three methods of teaching (IV). You plan to administer a standardized test (DV measured on an interval scale measuring knowledge acquisition) to the students in three classes with each class using a different teaching ..
What is wrong with this design? What confounds could be leading to the results of improved memory and problem-solving skills?
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