Mathematics, 12.11.2019 01:31, vperez719

# Each year about 1500 students take the introductory statistics course at a large university. this year scores on the nal exam are distributed with a median of 74 points, a mean of 70 points, and a standard deviation of 10 points. there are no students who scored above 100 (the maximum score attainable on the nal) but a few students scored below 20 points.

(a) is the distribution of scores on this nal exam symmetric, right skewed, or left skewed?

(b) would you expect most students to have scored above or below 70 points?

(c) can we calculate the probability that a randomly chosen student scored above 75 using the normal distribution?

(d) what is the probability that the average score for a random sample of 40 students is above 75?

(e) how would cutting the sample size in half aect the standard error of the mean?

Answers: 1

Mathematics, 21.06.2019 13:30, jamesgraham577

Which transformations could have occurred to map △abc to △a"b"c"? a rotation and a reflection a translation and a dilation a reflection and a dilation a dilation and a rotation

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Mathematics, 21.06.2019 14:00, ctyrector

Carson has only $20 bills and $10 bill in her wallet. the total value of the bills is $50. she has 1 more $20 bill than $10 bills. how many each kind of bill does carson have? a. one $20 and two $10 bills b. two $20 bills and one $10 bill c. one $20 bills and three $10 bills d. two $20 bills and two $10 bills

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Mathematics, 21.06.2019 17:00, burgoonp

Me on this one i will give you 20pts. answer should be in detail . this is the discussion topic. one of the most fiercely debated topics in sports is the hot hand theory. the hot hand theory says that success breeds success. in other words, rather than each shot a basketball player takes or each at-bat a baseball player has being an independent event, the outcome of one event affects the next event. that is, a player can get hot and make a lot of shots in a row or get a lot of hits in a row. the hot hand theory, however, has been shown to be false in numerous academic studies. read this article, which discusses the hot hand theory as it relates to a professional basketball player. state whether you agree or disagree with the hot hand theory, and give reasons for your opinion. be sure to use some of the terms you’ve learned in this unit, such as independent event, dependent event, and conditional probability, in your answer.

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Mathematics, 21.06.2019 20:00, rogelionavarro200314

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 + 4x + 5 = 0

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Each year about 1500 students take the introductory statistics course at a large university. this ye...

Health, 25.11.2019 20:31