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Question: Suppose the population of IQ scores in the town or city where you live is bell shaped, with a mean of 105 and a standard deviation of 15. Describe the frequency curve for possible sample means that would result from random samples of 100 IQ scores. The response must be typed, single spaced, must be in times new roman font (size 12) and must follow the APA format.
A six-sided die is rolled 100 times. Using the normal approximation, find the probability that the face showing a six turns up between 15 and 20 times.
If the standard deviation is $1050, how large a sample is needed to get the desired information and to be accurate within $200?
The researcher computes the sum of squares for groups as SSG = 40030 and the sum of squares for error as SSE = 414780. The numerical value of the ANOVA F statistic is
1. The prices of 12 randomly chosen homes in dollars (approximated to nearest thousand) in a growing region of Tampa in the summer of 2002 are given below. 176 105 133 140 305 215 207 210 173 150 78 96 Find the mean and standard..
the us department of education reports that 46 of full-time college students are employed while attending college. a
He decided to see if the results of the evening fit an "unbiased dice" model. Conduct the test and write a sentence summary of your conclusions.
The company is considering increasing fares by an appropriate amount to cover expected compensation to passengers who lose their luggage. By how much should the airline increase fares? Why? Explain, using the ideas of a random variable and its exp..
1. Travelers are asked how many hours they are willing to drive while on vacation in one day. A total of 86 travelers reported a mean of 11.55 hours with a standard deviation of 1.2 hours. Find the 99% confidence interval for the mean number of ho..
When sampling from a light-tailed, skewed distribution, where outliers are rare, a small sample size is needed to get good probability coverage.
A study is done to compare side effects for two different drugs used to treat a medical condition. One hundred people are given each drug.
Iindependently of one another. Two hundred seeds of such a cross are raised, and 142 turn out to be blue-flowering. Are the data consistent with the model?
Assume normality. Conduct the appropriate hypothesis test to determine whether there is any evidence that the aluminum arrow flies faster.
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