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Every year sixth-grade students in Ohio schools take proficiency tests. The list of sixth-grade reading score changes from the prior year are given below. Negative values indicate a decrease in score, positive values show an increase, and a zero shows no change from the prior year. Use the sign test to test the hypothesis that, "on average, reading scores have decreased from the prior year" use alpha = 0.05
-4 -4 -10 -9 -30 6 18 -3 2 -5 -6 -12 -9 1 -1 -2 19 6 -1 -14 -13 5 12 -8 6 -3 -8 -14 -16 -6 2 0 16 -7 6 -11 6 -8 -4 13 9 -12 12 -10
A researcher believes that the percentage of people who exercise in California is greater than the national exercise rate. The national rate is 20%. The researcher gathers a random sample of 120 individuals who live in the California and finds tha..
The latter is a random variable (any function of a random variable is a random variable). So what"s the corresponding fact about conditional expectation?
consider the formula used for any confidence interval and the elements included in that formula. what happens to the
A high of 10 was possible. A sample of five tests was selected from each group. The test grade results were: At the 0.01 level, what is the critical value?
It was thought that the national average price per pound for Ospertan Basil Oil in 1999 in the US was $14 per pound. Since that time the Ospertan Basil Oil Cartel (OBOC) has tried to limit the supply of Ospertan Basil Oil reaching the U.S in order..
The bank credit card department of Carolina Bank knows from experience that 5 percent of the card holders have had some high school, 15 percent have completed high school, 25 percent have had some college
scores on an endurance test for cardiac patients are normally distributed with mean 200 and standard deviation 30.a
give an example of global sustainability that demonstrates your understanding of the
suppose x has density function 3x-4 for x is greater than or equal to 1.a find a function g so that gx is uniform on
Determine the distributions given below represent a probability distribution. Justify your answer.
Six employees who have formed a car pool. If only four of these employees can drive, how many possible seating arrangements are there for the group?
For machine gun ammunition to be acceptable, the US Army requires that 96 percent of rounds fired hit a specified target. The test is to fire a 50 round burst at the target and observe whether this condition is met.
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