Mathematics, 25.11.2019 19:31 LexyV1242
Arandom sample of size n1 = 16 is selected from a normal population with a mean of 75 and standard deviation of 8. a second random sample of size n2 = 9 is taken independently from another normal population with mean 70 and standard deviation of 12. let x1 and x2 be the two sample means. find
(a) the probability that x1 − x2 exceeds 4.
(b) the probability that 3.5 < x1 − x2 < 5.5.
Answers: 1
Mathematics, 21.06.2019 22:30
At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?
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Mathematics, 21.06.2019 23:30
Tim earns $120 plus $30 for each lawn he mows.write an iniqualityvto represent how many lawns he needs to mow to make more than $310
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This stem-and-leaf plot represents the heights of the students on ralph’s basketball team. one student’s height is missing from the plot. if the mean height of all the students on the team is 61 inches, what is the missing height? a. 55 in. b. 59 in. c. 61 in. d. 65 in.
Answers: 1
Arandom sample of size n1 = 16 is selected from a normal population with a mean of 75 and standard d...
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