Ask question

Ask question

All categories

2 years ago

14

the mean of normally distributed test scores is 80 and the standard division is 5. If there are 186 test scores in the data samp

le, how many of them were in the 75 to 80 range?

1 answer:

Marizza181 [45]2 years ago

5 0

Answer:

63

Step-by-step explanation:

score 75 is one standard dev below the mean ====>to the mean encompasses approx 34% of scores

.34 * 186 = 63

You might be interested in

If you get a check for $289.25 a week, how much will you have made it at the end of the month

ankoles [38]

1,157 a month has approximate of 4 weeks so
289.25 x 4 = 1,157

4 0

3 years ago

Read 2 more answers

Write the equation of the line which contains all images of point C.

Elena-2011 [213]

Answer:

A. y = $\frac{1}{4}$ x - 2

Step-by-step explanation:

7 0

3 years ago

I need some help please

dimulka [17.4K]

I think the answer is the third one, but idk.

4 0

3 years ago

Please help I’ve been struggling for ages!

Lapatulllka [165]

Answer:

"D" only 1 & 2

Step-by-step explanation:

3 0

2 years ago

Given the speeds of each runner below, determine who runs the fastest.

Airida [17]

Adam divide the time by the distance and the biggest number is the fastest

5 0

2 years ago