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100 people are invited to the party. Each guest is estimated to eat 0 or 1 or 2 sandwiches with probabilities 0.2,0.50.3 respectively. How many sandwiches should be ordered ro be approx 90% confident that there will be enough sandwiches for every one? Use central limit theorem
According to the national institute of allergy and infectious diseases, about 3.7% of American adults have food allergy. A large company plans a lunch reception for its 400 employees. Assume that employees are independent. Let the random variable ..
A chemistry professor at ASU has 36 questions that she uses on her exams. Her exams always have 11 questions. How many distinct exams can she give? The order of the questions does not matter.
Five percent of the respondents gave $25,000 or more to charity over the previous year. Develop a 95% confidence interval for the proportion who gave $25,000 or more to charity.
Explain what the slope of -0.1184 indicates in terms of how winning times change from one set of Olympic games to the next. Olympic games occur every 4 years.
Marie claims she can predict the sex of pregnant women's babies. Since the chance of having a female is approximately 50%, how can she earn any money
Mr. Prime Minister, I am certain you will want to release the members of our National Liberation Group whom you currently hold in prison.
A committe studying employer-employee relations proposed that a rating system be adopted. Each employee would rate his or her inmediate supervisor and in turn the supervisor would rate each employee.
Determine the regression line. What do the coefficients tell you about the relationship between the two variables? Does it appear that the errors are normally distributed? Explain.
between 525 and 550 of them (inclusive) will result in twins being born?
a local social service agency is asked to determine areas in the greatest need of social support. the neighbourhoods
A public transport organisation has had a reputation for many years of caring little for its customers - the passengers it carries.
Construct a 98% confidence interval for the difference between the proportions of all sales at the two stores for which at least one item is returned.
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