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1. In a recent survey of 4513 college undergraduates, 20% reported having fallen asleep in class. To test this result, your instructor sampled 25 students from his class and asked them if they ever fell asleep in class. Using the survey data to represent the population for the instructor?s sample, what is the probability that:
a. None of the students sampled will report they fell asleep in class.
b. At least 4 students will report they fell asleep in class.
Drug manufacturer knows that for a certain antibiotics, the average number of doses ordered for a patient is 20. Steve Simmons, a salesman for the company
The probability that he passes both finals is .60. What is the probability that the student will pass at least one of these final examinations?
Excess postexercise oxygen consumption (EPOC) describes the energy expended during the body's recovery period immediately following aerobic exercise.
Household expenditure for long distance telephone service in City A and average monthly expenditure in City B extends from X to Y, determine the value of X?
Does correlation equal causation? Does the strength of correlation depend on the direction of the relationship? What is the meaning of a zero correlation? Explain your answers.
In hypothesis testing when is a two-tail test used in lieu of a one-tail test?
If 900 users visited the site, would the probability that more than 250 of them click on an ad be higher or lower than the answer found in part
Critically discuss the concept of the normal distribution, why it is important, and what you think it means. When students talk about "grading on the curve," how does that apply to the normal distribution?
create a time plot from the treasury bill returns data. here again just use the data. you need not answer the book
The firm examined 35 randomly chosen fax transmissions during the next year, yielding a sample mean of 14.44 with a standard deviation of 4.45 pages.
Construct a 99% confidence interval for the standard deviation, σ, of the replacement times of all washing machines of this type.
An insurance company, based on past experience, estimates the mean damage for a natural disaster in its area is $5,000. After introducing several plans to prevent loss
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