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A clothing store asserts that 60% of its customers pay by credit. On a particular day, 35 customers purchased items at the store. a. What is the mean and standard deviation of the binomial distribution? b. What is the probability that half (18 or more) of the customers paid by credit? c. What is the probability that 30 or more paid by credit? d. What is the probability that less than 12 paid by credit? e. What is the probability that 12 to 30 paid by credit?
At the 5 percent level of significance, can we conclude that the mean weight is greater than 16 ounces? Determine the p-value.
The distribution of SAT scores is normal with a m=500 and a standard deviation of o=100. What SAT scores (X values) separate
What is the probability that at least one of the alternations is discovered? Find the expected value and variance of the number of altered accounts discovered during the audit.
The world's smallest mammal is the bumblebee bat. Shown to the right are weights(in grams) from a sample of those bats. Use the traditional method and significance level of .05 to test the claim that these bats come from the same population having..
Formulate the hypotheses to test to see if the mean of the population is at least 12 ounces.
A business owner decides to use a binomial distribution to solve one of his problems.
A software company wants to determine whether there is a relationship between their three sales offices and the sales of their software products. The actual sales results are
The average diameter of sand dollars on a certain island is 3.60 centimeters with a standard deviation of 0.90 centimeters. If 36 sand dollars are chosen at random for a collection
The χ 2 statistic from a contingency table with 6 rows and five columns will have:
Name an application for the use of ANOVA. This can be in a professional setting, hobby, or something you find on the internet. What are some business situations where ANOVA would be more appropriate than a Z or T test?
Revenue of Large Businesses A researcher estimates that the average revenue of the largest businesses in the United States is greater than $24 billion.
The average price for a new home in a certain neighborhood is $275,000 with a standard deviation of $20,000. What is the probability that a particular home will cost between $280,000 and $300,000?
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