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The meat department of a supermarket sells ground beef in approximate 1 lb packages, but there is some variability. A random sample of 65 packages yielded a mean of 1.05 lbs and a standard deviation of .23 lbs. What is the 90% Confidence Interval for this problem?
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Compute Pearson's correlation coefficient between age and amount spent on this particular product.
assume that womens heights are normally distributed with a mean given by u62.3in and a standard deviation given by
The hospital was 12.0 weeks with the standard deviant of 1.0 week. Out of 100 patients, how many would you expect to stay longer than 13 weeks?
How do you find the z-score corresponding to a score of X = 100 for the distributions given below? How do you know what direction they are going?
suppose that the number of accidents occurring on a certain highway at a rate of 3 per day. let a be the number of
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.
The mean, median, and mode are the most common measures of dispersion (spread).
A shipment of 500 dolls is received by Panda Importers. The quality control manager selects a random sample of 75 to test. Five are bound to be defective. Construct a 90 percent confidence interval for the population proportion of defective dolls ..
A test was conducted to determine whether gender of a spokesperson affected the likelihood that consumers would prefer a new product.
Conduct the hypothesis test and provide the test statistic, critical value and/or P- value and state the conclusion.
Find the probability that the number of who consider themselves basketball fans is :
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