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You work for a bubble gum company testing new flavors to bring to market. Your marketing department claims in an ad they made that 8 out of 10 people prefer the new flavor "crazy tasks." You conducted a poll and found that 28 out of 60 people prefer the new flavor. Test the claim by using a confidence interval at a 95% confidence level.
State your null and alternative hypothesis in a complete sentence.
What is the 95% confidence interval?
What is your formal conclusion?
Mike, Joe and Bill are Painting a fence. The painting can be finished if Mike and Joe work together for 4 hours and Bill works alone for 2 hours, or if Mike and Joe work together for 2 hours, and Bill works alone for 5 hours, or if Mike works alon..
Estimating the sample standard deviation using normal score - Find the sample standard deviation?
Assuming that these ages constitute an entire population, find the standard deviation of the population. Round your answer to at least two decimal places.
How much profit can we gain by selling shoes? Can the magazine and/or th companyy profit by advertising and selling mens shoes?
At the .05 significance level, can we conclude that there is a difference in their mean times?
In studying satisfaction patients have with an operation I have 2 random groups each given a different questionaire. I want to compare the responses of each group and see if the differen
Assume that college women's heights are approximately Normally distributed with a mean of 65 inches and a standard deviation of 2.5 inches.
Consumers who are not regular yogurt eaters are polled and asked to rate on a 1 to 9 scale the likelihood that they would buy a certain yogurt product at least once a month; 1 means very unlikely, 9 means very likely.
The following list shows the 15 largest banks in the world by assets according to EagleTraders.com. Compute the median and the mean assets from this group.
Consider an urn that contains 40 balls. Of these 20 are red, 10 are green, and the remaining are blue. What is the probability that if nine balls are randomly selected from the urn then exactly three are of each color?
the mean number of shares traded on on the new york stock exchange in june 2004 was 2.4 billion per day. assume that
The population mean of a company's racing bicycles is 9.07 kg (20.0 lb) with a population standard deviation of 0.40 kg. If the distribution is approximately normal
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