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A vertical line is drawn through a normal distribution at z = -1.00. The line separates the distribution into two sections. What proportion of the distribution is in the larger section?
What is the probability that a single, randomly selected piece of material will be defective? (Give the answer to two decimal places.)
question a sample of 200 students in a stat class were asked how long did you sleep last night? the results are found
Compute SS, variance, and standard deviation for following population of N = 7.Scores: 8, 1, 4, 3, 5, 3, and 4. The definitional formula works well with these scores. Use the definitional formula to compute SS.
A manufacturer claims that fewer than 6% of its fax machines are defective. In a random sample of 97 such fax machines, 4% are defective. Find the P-value for a test of the manufacturer's claim.
Four have a 4/10,000 chance for failure. One component has a 1/100 chance for failure. What is the overall reliability of the product?
Suppose normality, determine a 90% confidence interval for population variance.
A United Nations report shows the mean family income for Mexican migrants to the United States is $27,000 per year. A FLOC(Farm Labor Organizating Committee) evaluation of 25 Mexican family units reveals a mean to be $30,000 with a sample standard..
The SAT scores of students are normally distributed with a mean of 950 and a standard deviation of 200. What percentage of students score between 1100 and 1200?
Given a level of confidence of 99% and a population standard deviation of 10, what other information is necessary:
Jim Sellers is thinking about producing a new type of electric razor for men. If the market were favorable, he would get a return of $100,000, but if the market for this new type of razor were unfavorable
Test hypothesis that intake of linoleic acid in this group is lower than that of general population. Also, calculate p-value for hypothesis test.
Compute the probability of receiving four calls in a five-minute interval of time. Compute the probability of receiving more than 10 calls in a five-minute interval of time.
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