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antiseptic1488 [7]
3 years ago
12

When mrs. myles gave a test, the scores were normally distributed with a mean of 72 and a standard deviation of 8. this means th

at 95% of her students scored between which two scores?
Mathematics
1 answer:
irina [24]3 years ago
5 0
The empirical rule states that in a normal distribution,
68% of data is within 1 std deviation of the mean
95%  of data is within 2 std deviation of the mean
99.7% of data is within 3 std deviation of the mean

In this case 95% of the cases would be within two std deviations of the mean 
    mean - 8         and    mean + 8
     72   - 8 = 64   and    72 + 8 = 80 

then 95% of the scores are between  64% and 80% on the test. 
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1 year ago
Find the median of the data set below? -12/4, 18/5, -2.5, 1/5, 10
nirvana33 [79]

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The median is 1/5 since it's in the middle of all five numbers.

Hope I could help! :)

5 0
3 years ago
Find the interest accrued on a $7500 loan with a 2.5% interest rate over 4 years
sukhopar [10]

The simple interest accrued is = $750

<h3>Calculation of simple interest</h3>

The principal amount of the loan = $7500

The rate at which the interest is paid is = 2.5%

The time that it will take to pay the interest = 4 years

Using the formula for Simple interest;

SI= P×T×R/100

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SI= 75000/100

SI=$750

Therefore, the interest accrued on a $7500 loan with a 2.5% interest rate over 4 years is = $750

Learn more about simple interest here:

brainly.com/question/20690803

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4 0
2 years ago
A train traveled 450 kilometers (450 km) east from its starting point for 9 hours (9 h). What was the average speed of the train
elixir [45]

Answer:

You need to find the average for your numbers

Step-by-step explanation:

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3 years ago
For what value of h is 24=h/10-6​
faltersainse [42]

Answer:

h=3

Step-by-step explanation:

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+6 to each side

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h=3

5 0
3 years ago
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