The scores for a particular examination are normally distributed with a mean of 68.5% and a standard deviation of 8.2%. What is

Question

2 years ago

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the probability that a student who wrote the examination had a mark between 80% and 100%? Give your answer to the nearest hundredth.

1 answer:

stepladder [879] · Answer 1 · 2022-07-09T16:02:34+03:00

6 0

Answer:

$P(80/100$

Step-by-step explanation:

We are given that

Mean, $\mu=68.5$ %=68.5/100

Standard deviation, $\sigma=8.2$ %=8.2/100

We have to find the probability that a student who wrote the examination had a mark between 80% and 100%.

$P(80/100$

We know that

$P(a$

Using the formula

$P(80/100$

$P(80/100$