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A retailer of electronic equipment received six HDTVs from the manufacturer. Three of the HDTVs were damaged in the shipment but the damage was not detected by the retailer. The retailer sold two HDTVs to two customers. What is the probability that neither of the two customers received damaged HDTVs?
Sample standard deviation of 1.1%. Using alpha = 0.05, does the analyst have statistical evidence to reject the claim made by the magazine?
Suppose we have a population of scores with a mean (μ) of 200 and a standard deviation (σ) of 10. Assume that the distribution is normal. What score would cut off the top 5 percent of scores?
The task will take between 8 minutes & 11 minutes. Find this probability. The engineer would also like to know what the time is such that 40% of the task times are less than this value.
If the probability distribution of X is: Determine the expected value of X? Find out the variance of X?
A thorough examination reveals that there is nothing wrong with the filling machine. From a statistical standpoint, was there a type error made? If yes, which type? Explain.
when a machine is improperly adjusted it has probability 0.2 of producing a defective item. each day the machine is run
A mortgage department of a large bank is studying its recent loans. Of particualr interest is how such factors as the value of the home (in thousands of dollars), education level of the head of the household, age of the head of the household, curr..
What characteristic (or property of random samples) could be observed during the sampling process?
1. kane discusses the concentricity of an engine oil seal groove. historically the standard deviation for the
In a survey of women in a certain country (ages 20-29), the mean height was 62.9 inches with a standard deviation of 2.81 inches.
question previous small study was investigating the total cost of 10 specific items of fruits and vegetables which
The diameters of oranges in a certain orchard are normally distributed with a mean of 5.26 inches and a standard deviation of 0.500 inches.
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