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sergiy2304 [10]
3 years ago
13

A study is run to estimate the mean total cholesterol level in children 2 to 6 years of age. A sample of 9 participants is selec

ted and their total cholesterol levels are measured as follows. 180 220 240 196 175 183 195 140 200 What is the sample mean?A)196B)200C)192.11D)180
Mathematics
1 answer:
barxatty [35]3 years ago
8 0

Answer:

C) 192.11

Step-by-step explanation:

To find the mean of any group of numbers, you simply add up all the numbers and then divide by how many numbers there are.

Using a calculator or a pencil, add the following:

180 + 220 + 240 + 196 + 175 + 183 + 195 + 140 + 200

= 1,729

The last step is to divide 1,729 by 9:

1,729 ÷ 9 = 192.11

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Eight years ago, Clyde was 7 years old. Which equation represents Clyde age now?
vichka [17]

Answer:

D.

Step-by-step explanation:

Clyde's present age is 7+8, because he has aged 8 years since he was 7.

So, the equation would be C=7+8.

However, that equation isn't listed so you need to move some numbers around.

If you subtract 8 from both sides of the equation C=7+8, you get C-8=7, which is D.

Hope this helps! :)

7 0
3 years ago
Gretchen computed the geometric mean of two numbers. One of the
alina1380 [7]

9514 1404 393

Answer:

  7

Step-by-step explanation:

When the mean of two numbers is the same as one of the numbers, then the other number also has that same value. This is true for any kind of mean:

arithmetic, geometric, harmonic.

The other number would be 7.

__

The geometric mean (m) of a and b is ...

  m = √(ab)

We have ...

  7 = √(7b)

  49 = 7b . . . . . square both sides

  7 = b . . . . . . . .divide by 7

a = b = m = 7 in this case.

6 0
3 years ago
Find the point on the directed segment from (−3, −2) to (4, 8) that divides it into a ratio of 3: 2
White raven [17]

Answer:

I think this is the correct answer

6 0
3 years ago
A number is equal to three times the smaller number also the sum of the smaller number and four is the larger number situation i
emmainna [20.7K]

Answer:

this question is missing needed information

8 0
3 years ago
It takes 70 inches of ribbon to make a bow and wrap the ribbon around a box. The bow takes 32 inches of ribbon. The width of the
Westkost [7]
You need two sides so you can rewrite it as:
2x = 70-(14+32)
2x = 24
x = 24/2
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The height is 12in.

Hope this helps! :)
7 0
3 years ago
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