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Does the data set represent a sample or a population? If it is a sample, describe the population from which it has been drawn.
The following data represent scores of 50 students in an applied business statistics test.
72 72 93 70 59 78 74 65 73 8057 67 72 57 83 76 74 56 68 6774 76 79 72 61 72 73 76 67 4971 53 67 65 100 83 69 61 72 6865 51 75 68 75 66 77 61 64 74
Based on information, compute the following: Percentage (or portion) of children who watch television less than 6.5 hours a week.
Florida State University administers a mathematics placement test to students where they 1st enter the university.
What is the likelihood the sample mean is greater than $22.50 but less than $25.00?
To findout 95 percent with confidence interval for the mean amount a citation. Police Chief Aaron Ard of River City reports 500 traffic citations were issued last month.
At the .10 level of significance, is the coin biased toward heads? Show your decision rule and calculations.
As it is a 2 × 2 table, try also two-tailed two-sample z test for π 1 = π 2 and verify that z 2 is same as your chi-square statistic. Which test do you prefer? Explain why?
Assume you want to repeat the FDA experiment to achieve an estimation of the mean μ of the amount of caffeine content of a cup of coffee.
If Z = 1.96, s = 3, and E = 1, determine the correct sample size.
At the 5% level of significance, can we infer that the population mean weight of athletic men is lower than the population mean weight of non-athletic men by more than 2 pounds?
mean is calculated for each sample, then the average distance between M and u would be:
At.05 level of significance determine if correlation between rental cost and apartment size is significant.
Test the proportions of yellow fire trucks have a significantly lower accident rate.
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