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What are the basic characteristics of a normal distribution and the normal curve?
Let's work with a really idealized normal distribution. We'll pretend that American 12-year-old boys have an average (mean) weight of 100 lbs.
Critically evaluate the article by examining the worthiness of the survey. In your discussion, cover the following items: purpose of survey, why was it conducted, for who was it conducted, and was it based on a probability or nonprobability sample..
in a certain community 30 of the families own a dog and 20 of the families that own a dog also own a cat. it is also
Suppose that you selected 50 samples of households. What is the expected shape of the distribution of the sample mean? What is the likelihood of selecting a sample with a mean of at least $112,000?
Accounting procedures allow a business to evaluate their inventory at LIFO (Last In First Out) or FIFO (First In First Out). A manufacturer evaluated its finished goods inventory (in $ thousands) for five products both ways.
At a food processing plant, a machine produces 10 lb bags of sugar. In this particular process, it is important that the sugar content does not go below 9.9 lbs. In fact, when the bags of sugar are less than 9.9 lbs, maintenance is performed..
Assume grades in college accounting class are normally distributed with a mean of 82 and a standard deviation of 7. what is the probability that a randomly selected student from this class will have a grade lower than 65?
Play 100 games of scraps and empirically determine an estimate for the probability of winning.
The quality-control manager at a light bulb factory needs to determine whether the mean life of a large shipment of light bulbs is equal to 375 hours. The population standard deviation is 100 hours.
a group of 49 randomly selected students has a mean age of 22.4 years with a standard deviation of 3.8. construct a 98
Weights are distributed normal with a mean of 132 pounds and a standard deviation of 27.4 pounds. In a random sample of 150, how many of them would be expected to weigh between 100 and 115 pounds?
a fan is to produce an air curtain to separate a loading dock from a security room. the air curtain is a jet of air 8ft
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