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jarptica [38.1K]
2 years ago
10

A teacher surveyed her class after they had taken a vocabulary test. Eighteen of the students claimed they had studied at least

one hour for the test. The remaining twelve students admitted that they had not studied for the test at all. The test results (expressed as a percent) for the two groups are shown below.
Studied: 87, 100, 94, 79, 92, 100, 95, 83, 89, 99, 100, 91, 89, 95, 100, 93, 96, 83

Did Not Study: 82, 72, 45, 91, 58, 83, 65, 87, 90, 77, 73, 89

Part 1: Calculate the mean of the group that did not study, rounded to the nearest tenth.

Part 2: Calculate the mean absolute deviation of the group that did not study, rounded to the nearest tenth.

Part 3: How many of the scores (from the group that did not study) are more than two mean absolute deviations from the mean?
Mathematics
2 answers:
Burka [1]2 years ago
7 0

Answer:

92.5

Step-by-step explanation:

1 is actually the mean of the group that did study is 92.5

2 is the MAD 5.2.

3is there are ten scores that are within the one MAD of the mean.

Nadusha1986 [10]2 years ago
4 0
The answer would be 92.5
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mr Goodwill [35]

Answer:

The difference between the circumference of the tires is 12.56 inches.

Step-by-step explanation:

Given:

Diameter of old bicycle tires = 12 inch

Diameter of new bicycle tires = 16 inch

We need to find the difference in circumference of the tires.

Solution:

First we will find the circumference of Old bicycle tires.

Circumference can be calculated by π times diameter.

Circumference of Old bicycle tire = \pi \times 12 = 37.68\ in

Now we will find the circumference of new bicycle tire.

Circumference of New bicycle tire = \pi \times 16 = 50.24\ in

Now to find the difference between the circumference of the tires we will subtract Circumference of New bicycle tire from Circumference of Old bicycle tire we get;

framing in equation form we get;

difference between the circumference of the tires = 50.24-37.68 =12.56\ in

Hence The difference between the circumference of the tires is 12.56 inches.

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3 years ago
You have 1/8 gallon of melted crayon wax. You pour the wax equally into 8 different molds to make new crayons. What fraction of
saw5 [17]

Answer:

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Step-by-step explanation:

16/8=2 so it is 2 cups

7 0
3 years ago
Okay last one of these, 15 points xox​
Vanyuwa [196]

Answer:

<u>13.2 centimeters</u>

Step-by-step explanation:

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7 0
1 year ago
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PIT_PIT [208]

Answer:

On the circle

Step-by-step explanation:

Because all of the points on a circle are equidistant from the center, if a circle has a radius of 10 then all of the points are 10 units from the center. Using the Pythagorean Theorem, you know that the distance from (4,0) to (-2,8) is:

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3 years ago
There are 80 pupils in a school. If 32 are boys, what percentage are boys?
maks197457 [2]

Answer:

40%

Step-by-step explanation:

32/80=.4

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2 years ago
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