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A production process is set to manufacture bolts with a diameter of .5 inches. The process has a standard deviation of .005 inches. If production is meeting these standards, what is the probability that a sample of 25 will have an average diameter that is greater than .502 inches?
Mean score on 10 item test for all students enrolled in a Traditional course was 9.64. A random sample of 41 students in Project Course is given same test
A five-year old study claims that selling prices of new homes / condominiums in the New York area have a normal distribution with mean = $180,000 and standard deviation = $40,000.
The U.S. Food and Drug Administration (FDA) performed a study that compared the carbohydrate content (as a percentage of weight) of several major brands of corn and potato chips.
A sample of 120 observations revealed that p = .30. At the .05 significance level, can the null hypothesis be rejected?
The probabilities .9 and .1 respectively. Give the probability distribution for daily sales. Find the mean and standard deviation of the daily sales.
the name of each contestant is written on a separate card the cards are placed in a bag and three names are picked
Through the week ending September 16,2011, tiger woods was the leading money winner on the PGA tour with total earnings of $5,517,777. Of the top 10 money winners, 7 players used a title it's brand golf ball. Suppose that we randomly select 2 of t..
What is the formula used to get percentile from z-score? I have z-scores but am using excel and want to be able to type in a formula to figure percent instead of coming here and continuing to figure it out.
A random sample of 15 customers is selected, and the results are as follows: 8.02 4.08 5.79 8.73 5.47 5.64 8.01 10.49 8.35 5.9 9.66 9.91 3.82 6.68 6.17 a) calculate arithmetic mean, median, mode, first quartile and third quartile.
What is the probability that the cereal would be high fiber? In other words, what is P (high fiber)?
question for each of the following state the null hypothesis and the alternative hypothesis.a the publisher of
The DPMO for process is 860. Find the approximate Six Sigma level of the process?
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