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The lifetime of a semiconductor laser has a lognormal distribution, and it is known that the mean and standard deviation of lifetime are 10000 and 20000, respectively.
A. Calculate Theta and w(omega):
B. Determine the probability that a lifetime exceeds 10100 hours.
C. Determine the lifetime that is exceeded by 90% of lasers
A person has purchased 5 of 1,000 tickets sold in a certain raffle. To determine the 10 prizewinners, 10 tickets are drawn at random and without replacement. compute the probability that he wins at least one prize.
The products are acceptable and that 30% are defective. If five of the products are randomly selected, find the probability that all five are defective?
the mean score on a physical fitness test for division i student-athletes is 947 with a standard deviation of 205. if
A particular candidate claims she has the support of at least 60% of the voters in her district. A random sample of 150 voters yields 87 who support her.
Stock A has an expected return of 12% and a standard deviation of 40%. Stock B has an expected return of 18% and a standard deviation of 60%. The correlation coefficient between Stocks A and B is 0.2.
Find the probability that a given mouse will live. a. more than 32 months b. less than 28 months c. between 37 and 49 months.
At the 0.10 significance level, can we conclude that the annual rates of return are higher on the big board?
Conduct the following test using 95% level of confidence.
Give a scenario (preferably related to your area of expertise or work experience) in which a judgmental forecasting method would be used. Which particular judgmental forecasting method
What is the shape mean and standard deviation of the resulting distribution of the sample mean? What is the probability that the mean of the sample of 42 is more than 52 hours?
Differentiate between the levels of measurement by providing an example of data which can be transformed from one level of measurement to another and another example of data that cannot be transformed.
Your company has two warehouses in Detroit and Dallas. Detroit has 150 units ready to ship, Dallas 180 units. You have to fulfill two orders, one for 120 units to New York, and one for 190 units for Las Vegas.
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