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 =
The formula for volume is length multiplied by width multiplied by height
I hope this helps sorry if it doesn't :)
Answer:
7+8+9/7*8*9 = 24/504 or 0.0476
Step-by-step explanation:
Step-by-step explanation:
4 + n + 7m
constants are just the numbers with no variables (letters)
so the constant is 4
coefficients are numbers multiplied by variables (letters)
so the coefficients are : 7 and 1
the error sarah made is forgetting the coefficient of n......because even if it is not written, n is the same as 1n....so basically, there is a coefficient for EVERY variable, even if its not written.