Mathematics, 06.02.2021 01:00 KillerSteamcar
Randi and Leah are studying together for an exam. Let X represent the number of hours Randi spends studying
nightly, and let Y represent the number of hours Leah spends studying nightly. The mean of X is 4.5 hours with a
standard deviation of 1.1 hours and the mean of Y is 3.7 hours with a standard deviation of 1.8 hours. Assuming these are independent random variables, which answer choice correctly calculates and interprets the standard
deviation of the sum, S = X + Y?
Answers: 3
Another question on Mathematics
Mathematics, 21.06.2019 17:50
To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1
Answers: 1
Mathematics, 21.06.2019 20:00
Aconstruction worker has rope 9 m long he needs to cut it in pieces that are each 3 /5 m long how many such pieces can he cut without having any rope leftover?
Answers: 3
Mathematics, 21.06.2019 22:30
What fraction is equivalent to 0.46464646··· a. 46⁄99 b. 46⁄999 c. 46⁄100 d. 23⁄50
Answers: 1
Mathematics, 21.06.2019 23:30
Is the underlined participial phrase correctly placed or misplaced? i smelled each and every flower strolling through the garden. a. correctly placed participial phrase b. misplaced participial phrase
Answers: 2
You know the right answer?
Randi and Leah are studying together for an exam. Let X represent the number of hours Randi spends s...
Questions
Mathematics, 25.01.2020 20:31
Chemistry, 25.01.2020 20:31
Mathematics, 25.01.2020 20:31
Mathematics, 25.01.2020 20:31
Social Studies, 25.01.2020 20:31
English, 25.01.2020 20:31
Biology, 25.01.2020 20:31
Geography, 25.01.2020 20:31
Mathematics, 25.01.2020 20:31
Mathematics, 25.01.2020 20:31
