Answer: a) 0.0088
b) 0.2997
c) 5
Step-by-step explanation:
Given : Mean :
minutes
Standard deviation :
minutes
The formula for z-score :

a) For x = 60 minutes

The p-value =
b) For x = 75 minutes

The p-value =

c) For x = 90 minutes

The p-value =

If the number of students in the class = 60 .
Then , the number of students will be unable to complete the exam in the allotted time =
5.68x10^11
100=10^2
1 billion=10^9
10^2*10^9=10^11
Answer:
6.04%
Step-by-step explanation:
First, find the difference, 19.3 - 18.2 = 1.1
Find the percentage of 182 is 11. 11/182 = about 0.0604
Percent = Decimal * 100
0.0604 * 100 = 6.04
Hope this helps :)
Answer:it’s a
Step-by-step explanation:I did it before