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The College Board reported the following mean scores for three parts of the Scholastic Aptitude Test (SAT): Critical Reading 502; Mathematics 515; Writing 494 Assume that the population standard deviation on each part of the test is 100. 1. For a random sample of 64 test takers, find the standard deviation of the sampling distribution of the sample mean. 2. For a random sample of 100 test takers, find the standard deviation of the sampling distribution of the sample mean
question 1 one subway station in toronto has 6 turnstiles each of which can be controlled by the station manager to be
State the five types of central tendency in general use. Which of these are most frequently used in SPC work and calculate the median for the group of results tabulated below: 1,3,4,6,7,9,11,14,16,17,18.
What is the reality of the use of e-learning from the perspective of students of the First Level in the Department of Management Information Systems at University of Hail
In a survey of 900 college students , 405 out of 900 students has credit card or 45% of the student owned a credit card.
Decision Trees are graphic displays of the decision process. When do you feel it is appropriate to use decision trees?
Assume the random variable x is normally distributed with a mean of 50 and a standard deviation of 7. Find the indicated probability. P(x>36)
How many turnstiles must be opened in each direction every morning and describe the suppositions underlying the solution of this problem by using queuing theory.
Obtain the arithmetic mean
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.
Test the hypothesis that there is not relationship between the proneness to use excessive force score and the force score for officers trained at Academy A.
question 1a marine biologist has evidence from other studies that the number of fish is declining in certain lakes
State the null and alternative hypotheses
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