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26% of college students say they use credit card because of the rewards program . You randomly select 10 college students and ask each to name the reason he or she uses credit cards. Find the probability that number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. If convenient, use technology to find the probabilities.
The width of a confidence interval will be:
For a sample of 11 independent observations from a normal distribution of unknown μ and unknown variance σ 2 , the sample mean is 74.6 and sample variance is 2.2. What is the lower point of the 90% confidence interval for μ?
Is there any evidence that the different teatments produced different responses? If so, which one seems to work best?
Compute β-error of test in part (a) if true difference in mean burning rate is 2.5 centimeters per second.
Why can not we just do several two sample tests like we did in the last week. In your own words explain briefly also tell us what these are and what did it mean.
Discuss the purpose of transforming raw scores into standard scores. Describe what "normal distribution" means. Describe measures of variability and explain how they can help therapist understand assessment data.
What is the probability that a person who has submitted one entry will win the following?
Number of miles flown in a One- year period by the sample of "frequent flyers" was recorded. Is this a grouped or an ungrouped frequency distribution?
Construct a test of 20 objective type items in your subject. Administer test to a group of 50 students conduct an item analysis and write a report. Explain the meaning of co-efficient of correlation. Why does the homogeneity and heterogeneity of sco..
What kinds of plots are useful in data screening? What can you do if your data do not meet the assumptions of your statistic?
At the .05 level of significance, can we conclude the Middletown students stayed in their districts less time than the Brockton students? Use the five-step hypothesis testing procedure.
When comparing data from different distributions, what is the benefit of transforming data from these distributions to conform to the standard distribution?
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