Mathematics, 05.12.2019 00:31 caitlynnstokes
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: 2
Mathematics, 21.06.2019 15:10
Marcus needs to rewrite f(x) = x2 + 6x + 4 in vertex form.
Answers: 1
Mathematics, 21.06.2019 21:50
Which is the graph of this function 3 square root of x plus one if
Answers: 1
Mathematics, 21.06.2019 23:00
How many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.) how many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.)
Answers: 2
Mathematics, 21.06.2019 23:30
It takes an ant farm 3 days to consume 1/2 of an apple. at that rate, in how many days will the ant farm consume 3 apples
Answers: 1
Each year about 1500 students take the introductory statistics course at a large university. this ye...
Geography, 21.05.2021 03:00
Mathematics, 21.05.2021 03:00
Mathematics, 21.05.2021 03:00
Mathematics, 21.05.2021 03:00
Mathematics, 21.05.2021 03:00
Health, 21.05.2021 03:00
History, 21.05.2021 03:00
Mathematics, 21.05.2021 03:00
Mathematics, 21.05.2021 03:00