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A soft drink company wants to test-market a new product in n = 40 randomly selected convenience stores. The product will be introduced if in excess of 10 cases are sold per week in each store. Experience with similar new products reveals that sales are approximately normally distributed and that the standard deviation should be approximately 3.5 cases per week. Should the new product be marketed? Let α = 0.05. What is the p-value for this test?
In a random sample of 10 cell phone users, what is the probability that exactly 2 have used their phones to access the Internet? More than 2?
Calculate the standard deviation of the data. For this calculation compute the difference between each one of the observations and the mean.
dentists use of anesthetics. a study published in current allergy amp clinical immunology mar. 2004 investigated
What is the (a) Minimum number of doctors required so that at least 70% of the arriving patients can receive treatment immediately
a certain population has a mean of 476 and a standard deviation of 36. many samples of size 56 are randomly selected
twenty years ago postal employees worked for the postal service an average of 7.5 years. recently a sample of 100
Calculate the expected loss to each person prior to and subsequent to entering into a pooling arrangement. What happens to the standard deviation of the distribution of losses to each individuals subsequent to the pooling arrangement?
Write an expression for the probability that during a given 1-min period, all of the operators receive exactly the same number of requests.
what is the first big change that american drivers made due to higher gas prices? according to a survey 30 said that it
We will test to determine if there evidence of an improvement on the final examination, at the 1% significance level. What is the alternate hypothesis?
a researcher wants to determine if the average performance on a standardized business management test is significantly
an average of 5 cars arrive per hour at a restaurant. assume that the number of cars arriving perhour follows poisson
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