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At a computer manufacturing company, the actual size of computer chips is normally distributed with a mean of 1 centimeter and a standard deviation of 0.1 centimeter. A random sample of 12 computer chips is taken. what is the standard error for the sample mean?
Using a significance level of .01 to test this hypothesis, what is your decision rule?
Standard deviation of 10 pounds.. Find the probability, P(W
If p denotes the p -value of the corresponding hypothesis test, which of the following is true?
If sales is the variable you are trying to explain and you have 2 independent variables of color and price. The color coefficient is 100, and the price coefficient is -200.
A presidential candidate's aide estimates that, among all college students, the proportion p who intend to vote in the upcoming election is at most 65%.
Assume that the heights of adult white men have a mean of 67.9 inches and a standard deviation of 2.8 inches. If 64 men are randomly selected, find the probability that they have a mean height greater than 68.9 inches.
a) Compute a 95% Confidence Interval for the true population proportion of successes. b) Based on this analysis can you conclude that the new system meets the requirement? Explain your conclusion.
The population of IQ scores forms a normal distribution with a mean of u=100 and a standard deviation with a mean of sigma=15.
No more than 36% of the monthly gross income. what is the maximum monthly mortgage loan payment for which shawn can be approved?
Find the probability that the number who say oatmeal is their favorite cookie is (a) exactly four, (b) at least four, and (c) less than four.
How does a t test differ from a z test in terms of when it is used, how it is calculated, and how we determine significance?
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