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The likelihood it will rain in NC on Monday 9s 60%. SC 70%. If it rains in Greenville on Monday, there is a 80% chance that it will rain in NC that day. What is the probability it will rain in at least one of the above states.
How do I define the the population and select a simple random sample of size n from the population? A random sample of n=12 values taken from a normally distributed population resulted in the following sample value:
A researcher investigating sex role stereotypes and occupational aspirations drew a random sample of 125 female university students.
As it is a 2 × 2 table, try also two-tailed two-sample z test for π 1 = π 2 and verify that z 2 is same as your chi-square statistic. Which test do you prefer? Explain why?
Find the probability of getting a queen and a spade.
For a study that consists of personal interviews with participants (rather than mail or phone surveys), explain why simple random sampling might be less practical than some other sampling methods.
Maximum change in length of BD must not exceed 0.001 times the length of ABC, determine the smallest-diameter rod that can he used for member BD.
The average cost of repairing a VCR is $80 with a standard deviation of 19. if one VCR is repaired, find the probability the cost is between 70 and 90.
If new inspector measures 101 stampings with variance of 0.13 square inch, test at 0.05 level of significance whether inspector is making satisfactory measurements. Suppose normality.
Assume that the master budget for Cannondale shows total variable expenses of $10,000. The budget was based on production of 5,000 units. Cannondale sells all units it produces.
The president of the wholesale distributor is concerned about the possibility of stockouts causing a loss of customer confidence and loyalty and is interested in maintaining safety stock in inventory to prevent potential stockouts.
Probability based on normal distribution. Suppose among X has a normal distribution, and find the indicated probability.
A human society claims that less than 31% of U.S. households own a dog. In a random sample of 392 U.S. households, 155 say they own a dog. At a=0.03, is there enough evidence to support the society's claim?
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