Mathematics, 27.04.2021 18:00 myparentsrock17
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?
Mu Subscript s Baseline = 0.7; Randi and Leah can expect the total number of hours spent studying to vary by approximately 0.7 hours from the mean.
Mu Subscript s Baseline = 1.7; Randi and Leah can expect the total number of hours spent studying to vary by approximately 1.7 hours from the mean.
Mu Subscript s Baseline = 2.1; Randi and Leah can expect the total number of hours spent studying to vary by approximately 2.1 hours from the mean.
Mu Subscript s Baseline = 2.9; Randi and Leah can expect the total number of hours spent studying to vary by approximately 2.9 hours from the mean.
Answers: 2
Mathematics, 21.06.2019 18:30
Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.
Answers: 1
Mathematics, 21.06.2019 20:00
Formulate alisha has a number in mind. if she adds three to her number the result is less than five. use this information to write and solve an inequality about alisha's number. then graph the solution set.
Answers: 1
Mathematics, 21.06.2019 22:30
Select all of the following expressions that are equal to 2.5.
Answers: 3
Mathematics, 21.06.2019 22:30
Which of the following graphs could represent a quartic function?
Answers: 1
Randi and Leah are studying together for an exam. Let X represent the number of hours Randi spends s...
Chemistry, 24.08.2019 02:10
Mathematics, 24.08.2019 02:10
Mathematics, 24.08.2019 02:10
Mathematics, 24.08.2019 02:10
Mathematics, 24.08.2019 02:10
History, 24.08.2019 02:10
Biology, 24.08.2019 02:10
Computers and Technology, 24.08.2019 02:10
Computers and Technology, 24.08.2019 02:10
Social Studies, 24.08.2019 02:10
Social Studies, 24.08.2019 02:10