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A particular department store knows from past experience that 15% of their customers have the store's credit card. What is the probability that out of the next 85 customers that at least 18% have the store's credit card?
What is meant by the term "90% confident" when constructing a confidence interval for a mean?
use the appropriate normal distribution to approximate the resulting binomial distribution.the manager of madison
Compare two models. Model #1 has an r-squared of .55 and an adjusted r-squared of .50. Model #2 has an r-squared of .52 and an adjusted r-squared of .51. Given this information, what model should you use?
What is the probability that there will be a stock out? Given that you, the maintenance officer at the facility, want the probability of a stock out to be no more than 5% what should the reorder point be?
The company you work for employs 585 assembly-line workers - 526 men and 59 women. 16 men and 10 women have been laid off.
Historian have suggested that the success of European colonial rule in West Africa was contingent on the pivotal contributions of indigenous elites.
A survey of teenagers in Bangalore found 80% favor lowering the legal drinking age. The error was 2%. How was this figure arrived at?
Suppose you think this ad exaggerates the temperature upwards, and you look at a random sample of 30 Christmas days and find an average of 50º and standard deviation of 8º. Conduct the test and give the p-value.
An investigator wants to estimate caffeine consumption in high school students. How many students would be required to ensure that 95% confidence interval estimate for the mean caffeine intake (measured in mg) is within 15 units of the true mean? ..
Has there been a significant decrease in the proportion of students who change their major after the first year in this program? Test at the .05 level of significance.
A fast-food chain sells its burgers alone or as part of a "value meal" that includes fries and a drink. They know that some customers are health-conscious.
Garden. A company selling vegetable seeds in packets of 20 estimates that the mean number of seeds that will actually grow is 18.
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