Answer:5/23
Step-by-step explanation:
The student scored 35 in the test
workingout:
70/100 x 50 = 35
to make sure :
35/50 x 100 = 70
:)
Answer:
0.5161
Step-by-step explanation:
There is a lot of unnecessary information in this question. We only need info for Smartphone A users since our sample size consists of entirely Smartphone A users, and it's asking about them. So ignore any info that isn't about Smartphone A users.
We have (for Smartphone A users):
x = 15, s = 6.4, n = 16
We want: P(14.5 < x < 17)
We need to find the z-scores for the values of 14.5 and 17 using the data for smartphone a users.
See attached photo for the calculation of the 2 z-scores and the probabilities
Mom's view is that she loses 50 dollars, but gains back 17.85 dollars as change from her daughter.
Olivia's view is that she gained 50 dollars from her mom, spent 32.15 dollars, then gave back the 17.85 change to her mom, so she didn't gain any money.
Mom's point of view: -$50 + $17.85 and Mom's point of view: -$50 + $17.85 are the correct answers, but technically, Olivia still owes her mom 32.15 dollars.