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A multiple choice test consists of 60 questions. Each question has four possible answers, and each question has one correct answer. If all answers are random guesses, find the probability of getting at least 30% of the questions correct.
mike dreskin manages a large los angeles movie theater complex called cinema l ll lll lv. each of the four auditoriums
Determine the mean and standard deviation of this distribution?
A company requires its secretarial employees to demonstrate his/her ability to type more than 45 words per minute in a typing test.
Discuss an example from every day life, your professional experience, personal life or sports where two variables are positively correlated and why; discuss a second example where two variables are negatively correlated and why.
If the company's report is correct, what is the probability that the average balance of an account in the sample is $383 or less?
What would happen to the size and the sign of the correlation coefficient if we correlated these two variables? How can researchers work around this issue?
If we have a random sample of 6 patients who press call buttons. What is the probability that under 4 of them will have to wait five minutes to more for staff to respond?
for a normal distribution find the z-score values that separate the middle 80 of the distribution from the 20 in the
a rehabilitation center researcher was interested in examining the relationship between physical fitness prior to
For how many of the 100 days was the number of paying customers within three standard deviations of the mean? Explain how you determined your answer.
The researcher estimated that out of the 100 students at least 50% of the students would be exposed to movies and TV w/ crude humor at least 2-4 times per week.
scores on the critical reading part of the sat exam in a recent year were roughly normal with mean 501 and standard
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