Answer: 16
Step-by-step explanation:
Given : Mean :
Standard deviation :
The value of z-score is given by :-
For x= 115
The p-value :
Now, the number of people smarter than Many is given by :_
Hence, there are 16 members smarter than Mandy.
Describe how you would multiply 4 x 300 using mental math
2 answers:
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9514 1404 393
Answer:
x ≈ 2.87
Step-by-step explanation:
We can subtract 6 to put the equation into a form easily solved.
x^2 +2x +1 = 15
(x +1)^2 = 15
x +1 = √15 . . . . . for the greatest solution, we only need the positive root
x = √15 -1 ≈ 2.87
