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At a large university, 500 freshmen take their final exam for their marketing course. Scores are normally distributed with a mean 79 and standard deviation 7. What is the probability of a score, X, falling between 73 and 83?
What value is standard deviation for this data? What type of probability is this?
Compute the coefficient of correlation and the coefficient of determination and determine the regression equation.
Assume x is normally distributed with mean u=15 and standard deviation 0=3. Use the approximate areas beneath the normal curve, as discussed in this section, to answer the following questions.
If one item is chosen at random, determine these probabilities. It is a TV
What is the probability that the first two cards dealt yields "Black Jack"?
Recall that the trash bag manufacturer has concluded that its new 30 gallon bag will be the strongest such bag on the market if its mean breaking strength is at least 50 pounds.
expectation of the statistic that was proposed by Statistician - Based on the information collected in Tasks 1-8, which of the two statistics produces values which tends to be more concentrated about the expectation of the measurement?
A recent study indicated that 29% of the 100 women over age 55 in the study were widows. If no estimate of the sample proportion is available how large should the sample be?
The area under a normal curve is always equal to 1, no matter what the mean and standard deviation are.
While exploring data that was collected for an investigation of resources needed for software testing and improvement, you have found an outlier.
This includes knowing how to use an ANOVA for managerial decisions. Present a business example where you would use an ANOVA. State the hypothesis verbally and numerically.
At the .10 significance level, can we conclude that there is a difference in the amounts quoted?
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