Answer:
0.9007 is the probability that a student scored below 86 on this exam.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 77
Standard Deviation, σ = 7
We are given that the distribution of examination grades is a bell shaped distribution that is a normal distribution.
Formula:

a) P(student scored below 86)
P(x < 86)
Calculation the value from standard normal z table, we have,

0.9007 is the probability that a student scored below 86 on this exam.
Answer:
no entiendo inglés
Step-by-step explanation:
sorry 1,5 metro
Answer:
the answer is A)Social Security tax: $2,194.80, Medicare tax: $513.30
Step-by-step explanation:
Answer:
three
Step-by-step explanation:
The answer would be 22.33 hope this helped