subject
Mathematics, 15.12.2020 08:40 ShayMoore

Two 5-year old girls, Alyse and Jocelyn, have been training to run a 1 mile race. Alyse’s 1 mile time A is approximately Normally distributed with a mean of 13.5 minutes and a standard deviation of 2.5 minutes. Jocelyn’s 1 mile time J is approximately Normally distributed with a mean of 12 minutes and a standard deviation of 1.5 minutes.
Assuming A and J are independent random variables, what is the probability that
Alyse has a smaller time than Jocelyn in a 1 mile race on a randomly selected day?

I'm more so looking for an explanation on how to find the answer, thanks :)

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 17:20
Which functions shave a maximum and are transformed to the left and down of the parent function ,check all that apply f(x) = x2? p(x) =14 (x+7)2 + 1
Answers: 3
question
Mathematics, 21.06.2019 17:30
Graph the equation. select integers for x
Answers: 1
question
Mathematics, 21.06.2019 21:00
Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.
Answers: 1
question
Mathematics, 21.06.2019 22:00
10 points? ? +++ me asap gabriella uses the current exchange rate to write the function, h(x), where x is the number of u.s. dollars and h(x) is the number of euros, the european union currency. she checks the rate and finds that h(100) = 7.5. which statement best describes what h(100) = 75 signifies? a) gabriella averages 7.5 u.s. dollars for every 100 euros. b) gabriella averages 100 u.s. dollars for every 25 euros. c) gabriella can exchange 75 u.s. dollars for 100 euros. d) gabriella can exchange 100 u.s. dollars for 75 euros.
Answers: 2
You know the right answer?
Two 5-year old girls, Alyse and Jocelyn, have been training to run a 1 mile race. Alyse’s 1 mile tim...
Questions
question
Biology, 31.01.2020 02:54
Questions on the website: 13722367