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(a) Is there a correlation between the grades a student attained in high school and the grades he or she attained in college? (Correlation, Regression, Not Enough Information)
(b) What is the relationship between the weight of a package and the cost of mailing it first class? (Correlation, Regression, Not Enough Information)
(c) Is there a linear relationship between a person's height and shoe size? (Correlation, Regression, Not Enough Information)
(d) What is the relationship between the number of worker-hours and the number of units of production completed? (Correlation, Regression, Not Enough Information)
(e) Is the score obtained on a certain aptitude test linearly related to a person's ability to perform a certain job? (Correlation, Regression, Not Enough Information)
Standard deviation of this poll is 4%. What would be standard deviation if sample size were increased from 83 to 190?
The distribution of sample mean for samples of 500 homes is normal with a mean of 2.64 and a standard deviation of 0.06. Suppose you select a random sample of n=500 homes and determine that the mean number of people per home for this sample id 2.5..
The sum of two numbers is less then 27. The second number is 7 less then the first. What are the possible values for the first and second number
At the 5% level of significance, can we infer that the population mean weight of athletic men is lower than the population mean weight of non-athletic men by more than 2 pounds?
a lake contains 4 distinct types of fish. suppose that each fish caught is equally likely to be any one of these types.
find the 50th percentile median the 25th percentile first quartile the 75th percentile third quartile and the 90th
a quality engineer is monitoring a lens coating process where a lens is either a high quality lens or not a high
Assuming that Richard guesses on all eight questions, find the indicated probabilities. What is the probability that he will answer all questions correctly?
Identify the scale of measurement in each of the following:
What is the probability that she never misses in 10 shots? there are exactly 8 bulls eyes in 10 shots? there are no more that 8 bulls eyes in 10 shots? she gets atleast one bulls eye?
in the last quarter of 2007 a group of 64 mutual funds had a mean return of 1.2 with a standard deviation of 6.5.
Shank's Inc., a nationwide advertising firm, wants to know whether the size of an advertisement and the color of the advertisement make a difference in the response of magazine readers.
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