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Q 2Question textAn analysis of the final test scores in this class shows that the scores follow the normal distribution. The mean of the distribution is 75, and the standard deviation is 8. The professor wants to award an A to a student whose score is in the highest 10%, which means 90% of the class will have lower grades. What is the cut-off point (or score) for those students who earn an A versus those who earn a B? In other words, what is the lowest grade an A student can earn? Hint: Solve for x.Select one:a. 82.2b. 64.7c. 85.3d. 96.9Q 3Question textIn a normal distribution of measurements having a mean of 500 feet and a standard deviation of 50 feet, what percent of the distribution falls between 490 and 520 feet?Select one:a. 63.26b. 55.65c. 23.47d. 24.32Q 4Question textYou want to compare the cost of a one-bedroom and a two-bedroom apartment in the area. You collect data from 10 advertisements of each type of apartment. Here are the rents for the one-bedroom apartments (in dollars/month):520, 645, 600, 505, 450, 550, 515, 495, 650, 385Here are the rents for the two-bedroom apartments (in dollars/month):605, 510, 580, 650, 675, 675, 750, 500, 495, 675Do two-bedroom apartments rent for significantly more than one-bedroom apartments? What can you conclude? Assume alpha = 0.05.Select the appropriate conclusion:Select one:a. p-value is approximately 0.019; two-bedroom apartments rent for significantly less than one-bedroom apartments.b. p-value is approximately 0.974; two-bedroom apartments rent for significantly more than one-bedroom apartments.c. p-value is approximately 0.026; two-bedroom apartments rent for significantly more than one-bedroom apartments.d. p-value is approximately 2.084; two-bedroom apartments rent for the same as one-bedroom apartments.
Calculate and interpret a confidence interval at confidence level approximately 95% for the difference between population mean height for the younger women and that for the older women.
Prepare a single summary table that shows average and standard deviation of current salary for males and females according to their Position within the company.
Please read through the case scenario shown below to gain an understanding of the background information and the research study
What is the General Linear Model (GLM)? Why does it matter and compare and contrast parametric and nonparametric statistics. Why and in what types of cases would you use one over the other?
A company makes a chemical product, and based on extensive experience they believe the critical-to-quality variable for this product has mean 410 and standard deviation 10.
Relationship between the average Wonderlic score and graduation rate?
A doctor want to estimate the HDL cholesterol of all 20-to 29 year old females. How many subjects are needed to estimate the HDL cholesterol within 2 points with 99%confidence assuming Q= 15.4 ? suppose the doctor would be content with 95% co..
In a survey to determine child care costs for working parents, the local Chamber of Commerce randomly samples licensed child care centers in four regions of the metropolitan area. The purpose of the survey is to see whether and how average child c..
An analysis was done to see if there was a correlation between the number of days of class missed and a student's GPA.
Examine the skewness and kurtosis values for each dependent variable, examining the histograms and examine the Shapiro-Wilks' results and What is the outcome of the multivariate tests
To display the distribution of "countries of origin" for cars in a USCB parking lot, which type of graph could be appropriate?
Calculate the standard deviation for the sample mean
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