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: I took the quiz and got the answer correct.
Hope this helps❤️
Answer:


Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 500
Standard Deviation, σ = 100
We are given that the distribution of SAT score is a bell shaped distribution that is a normal distribution.
Formula:

We have to find the value of x such that the probability is 0.64
P(X<x) = 0.64
Calculation the value from standard normal z table, we have, 


Answer:
Hey look i am sorry for not doing them both i only know the second it is b 3000
Step-by-step explanation:
Percent means parts out of 100
x%=x/100
'of' means multiply
30% of 70 means
30/100 times 70=
3/10 times 70=
210/10=
21
answer is 21