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A set of 10 cards consists of 5 red cards and 5 black cards. The cards are shuffled thoroughly and I choose one at random, observe its color, and replace it in the set. The cards are thoroughly reshuffled, and I again choose a card at random, observe its color, and replace it in the set. This is done a total of four times. Let X be the number of red cards observed in these four trials. The variance of X is
A. 4.
B. 2.
C. 1.
D. 0.5.
Using the standard normal table, the total probability to the right of z=2.18 and to the left of z=1.75 is?
Why do we want to assume that our sample data represent a population distribution? What are the differences between the binomial and normal distributions?
What sample size would be needed to obtain an error of +/- 10 square millimeters with 99% confidence?
Cast a die a number of independent times until a six appears on the up side of the die. Find the probability density function F(x)= P(X
If she actually has 55% of the total vote, what is the probability of getting a sample proportion this small or smaller? Do you think she actually has 55% of the vote? Why or why not?
Two percent of the parts from a production process are defective. A sample of five parts from the production process is selected. What is the probability that the sample contains exactly two defective parts?
In a goodness-of-fit test where the sample size is 200, there are 5 categories, and the significant level in .05. The critical value of X2 is.
scores on the sat mathematics test are believed to be normally distributed with mean micro. the scores of a random
What is the difference between the critical-value method and the p-value method of hypothesis testing? Include in your post how the question's topic pertains to your health discipline.
we build a warter filter box for koi fish ponds using the vinyl ester resin. the box dimension at the base are 36 l x
chocolate-coated sugar fun blast cereal is filled in boxes by weight. the weight of the boxes is approximately normally
jim has been employed at gold key realty at a salary of 2000 per month during the past year. because jim is considered
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