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A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 73 and a standard deviation of 8.
a) What is the probability that a student scored below 91 on this exam?
b) What is the probability that a student scored between 65 and 89?
c) The probability is five percent that a student taking the test scores higher than what grade?
d) If the professor grades on a curve (i.e., gives As to the top ten percent of the class, regardless of the score), are you better off with a grade of 81 on this exam or a grade of 68 on a different exam, where the mean is 62 and the standard deviation is 3? Show your answer statistically and explain.
What is the probability that exactly five films were directed by women. What is the probability that at least eight films were directed by women
(i) Interpret the parameter on GDP. Make sure to talk about Sign and Size.
a) What is the probability that you got the same number on all 10 rolls?
When you see an ad on TV for a body-shaping product (e.g., an abdominal muscle machine), often a person with a wonderful success story is featured in the ad.
if the distribution of the measure of a random variable is not a normal distribution what implications might that fact
The Court of Appeals erred in stating that petitioners'regression analyses were "unacceptable as evidence of discrimination", because they did not include all measurable variables thought to have an effect on salary level.
Dishwashers. Dan's Diner employs three dishwashers. Al washes 40% of the dishes and breaks only 1% of those he handles.
Suppose that 0.6 of the present 25,000 vehicle occupants killed in collisions were not wearing seat belts. There are about 170 million registered cars and trucks on the highway today.
The following table shows the grade point average (GPA) for five students along with their entrance exam scores for MBA programs (GMAT). Develop a model that would predict the GPA of a student based on his GMAT score. What would be the predicted G..
Native Americans in California have transitioned from three colonizers in a period of less than a hundred years.
1.a researcher wanted to know if the content of television programs has an impact on viewers recall of ad content. he
Create a model which predicts the variation in educational attainment among the counties of Georgia. This will require some initial exploration of the data: useful techniques will include numerical summaries as well as visual tools (which may even..
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