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Otrada [13]
3 years ago
10

Data were collected on the number of days per week that members visit a certain fitness center. The values varied from 0 to 7, a

nd a distribution of relative frequencies for the values was created. Let the random variable X represent the number of days per week that a member visits. The mean of X is 3.12. Which of the following statements is the best interpretation of the mean?
Mathematics
1 answer:
pshichka [43]3 years ago
8 0

Answer:

D

Step-by-step explanation:

choice A is not guaranteed since the values varied from 0 to 7.

choice B seems alright, but doesn't include about or anything about the long run.

choice C is incorrect because 50% are less than 3.12 and 50% are greater than 3.12.

choice D seems pretty good, since it says average, long run, approach, etc.

choice E is incorrect because it says "will be". It is not definite.

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HG is the perpendicular bisector of FK.<br> What is the length of GH?<br> 8<br> 9<br> 15<br> 34
igor_vitrenko [27]

Answer:

GH=15

Step-by-step explanation:

HK= FK/2= 16/2= 8

Using pythagoras theorem in triangle GHK,

GH²= GK²-HK²

= 17²-8²

= 225

GH= √225

=15

4 0
2 years ago
The data below represent the number of days absent per year in a population of three employees of a small company:
love history [14]

The sampling distribution is illustrated below.

<h3>How to illustrate the sampling?</h3>

Based on the information given, the population is illustrated as 1, 4, 7. The sample without replacement will be:

<u>Sample Mean</u>

1 and 4. 2.5

1 and 7. 4

4 and 7. 5.5

The population mean will be:

= (1 + 4 + 7)/3

= 4

The sample mean is an unbiased estimator of the population mean.

The sampling with replacement illustrates that the mean will be:

= 36/9 = 4

Also, when n = 3, the number of samples will be:

= 3³ = 27

Learn more about sampling on:

brainly.com/question/17831271

#SPJ1

8 0
2 years ago
Out of the thirty
labwork [276]

Answer:

She answered 76 percent of the question correct.

Step-by-step explanation:

Convert fraction (ratio) 23 / 30 Answer: 76.6%

8 0
3 years ago
Indira finds that on a typical day, 4 out of every 5 students at her school eat a
Alenkinab [10]

Answer:

396

Step-by-step explanation:

it's it's 396 because if you add 99 more you will get 495.

each percentage is 99, so 99 x 5 is how many students there are 99 x 4 is the answer.

7 0
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