Mathematics, 03.08.2021 16:40 Halieyrobinson3003
The composite scores of individual students on the ACT college entrance examination follow a normal distribution with mean 21.1 and standard deviation 5.1
(a) What is the probability that a single student randomly chosen from all those taking the test scores 24 or higher? P(x> )=P(z> )=
(b) What is the probability that a simple random sample of 100 students chosen from all those taking the test has an average score of 24 or higher? P(x> )=P(z> )=
(C) Why is it more likely that a single student would score this high instead of the sample average of students? It is easier for one person to score well than for a group of people to score well. In order for a sample to have a high average, the majority of the people need to score high. The standard error is smaller than the standard deviation, which means that a value is less likely to be far from the mean.
All of the above.
Answers: 3
Mathematics, 21.06.2019 17:30, hwhite41
Is trapezoid abdc the result of a dilation of trapezoid mnpq by a scale factor of ? why or why not? yes, because ab and cd are each the lengths mn and qp. yes, because sides ab and cd are parallel to sides mn and qp. no, because ab is the length mn but cd is the length qp. no, because sides ab and cd have different slopes from sides mn and qp.
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Mathematics, 21.06.2019 22:00, kharmaculpepper
Question 13 (1 point) jerome is starting a new job. his contract states he will earn $42,000 the first year, and will get a 4% raise per year. which function s(x) represents jerome's salary after a certain number of years, x?
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The composite scores of individual students on the ACT college entrance examination follow a normal...
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