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An advertising agency is hired to introduce a new product. The agency finds that after its campaign 66% of all consumers are familiar with the product. We ask 10 randomly selected customers whether or not they are familiar with the product. (a) Is this a binomial experiment? Explain how you know. (b) Use the correct formula to find the probability that, out of 10 customers, exactly 5 are familiar with the product. Show your calculations or explain how you found the probability.
Salary data for a sample of 50 universities were obtained. We are curious about the relationship between mean salaries for assistant professors.
Which of the following is true about the expected value of perfect information. It is the amount you would pay for any sample study.
What is the probability that the sample mean breaking strength of a random sample of 100 pieces of fabric is less than 1 .8 kg/mm?
As part of the National Health and Nutrition Examination Survey, the Department of Health and Human Services obtained self-reported heights and measured heights for males aged 12-16. All measurement is in inches. Listed below are sample results.
ANOVA is a powerful statistical test. How does ANOVA differ from other parametric tests? What are the conditions that must be met to use a one-way ANOVA?
Drugstore was the first e-commerce company to offer Internet drugstore retailing. Drugstore.com customers were provided the opportunity to buy health, beauty, personal care, wellness, and pharmaceutical replenishment products over the Internet.
In a sample of 10 workers, what is the probability that exactly three workers take the public transport daily? [Hint: It is a Binomial Distribution Problem.]
What is the probability that the drug will be effective for 3 hours or more?
Permutation chi square test to a regular chi square table test. What happens in situations, where assumptions of a chi square test are violated? Discuss.
Calculate and compare the means for IQ as a dependent variable and gender as your independent variable. Do you think males and females differed in their IQ scores? Why?
Why is population shape of concern when estimating a mean? What does sample size have to do with it?
The length of a particular telemarketing phone call has an exponential distribution with a mean equal to 1.5 minutes. Find the probability that the length of a randomly selected call will be between 30 - 50 minutes and 1 minuter or longer.
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