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SAT scores
The College Board finds that the distribution of students' SAT scores depends on the level of education their parents have. Children of parents who did not finish high school have SAT Math scores X with mean 445 and standard deviation 106. Scores Y of children of parents with graduate degrees have mean 566 and standard deviation 109.
Perhaps we should standardize to a common scale for equity. Find positive numbers a, b, c, and d such that a + bX and c + dY both have mean 500 and standard deviation 100.
The mean number of tasks completed successfully by all teams each day and the standard deviation is computed. The results are given below. The ANOVA F-test statistic value is?
Are the events D_2 and D_4 independent? Do the appropriate calculation to answer this question. Then explain why your answer makes sense.
1. what are the assumptions of the simple linear model?2. name three assumptions of the anova
if mcclellan mcneil and newhouse have available a variable representing the presence of a treatment that is effective
in a gallop poll of 1005 randomly selected americans in april 2006 482 responded yes to the question do you consider
An investor invests in 40% of his money in stock A and 60% of his money in stock B, what is his portfolio's expected return? What is his portfolio's variance and standard deviation?
What type of survey method the researcher could use and why and what sampling method could the researcher use to select his/her sample and why
"Testing the Difference between Two Means." (Note: Please respond to only one of the following two bulleted items). What two assumptions must be met when you are using the z test to test differences between two means?
a survey of 25 randomly selected customers found the ages shown in years. 28 36 40 26 33 24 11 47 23 33 46 38 35 14 33
Do you think n = 30 would be large enough for the approximate normal shape to hold? What is different about these two examples?
a. Formulate a linear programming model for this problem. b. Solve the model by using the computer.
Muscular dystrophy is an incurable muscle-wasting disease. The most common and serious type, called DMD, is caused by a sex-linked recessive mutation.
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