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Artist 52 [7]
3 years ago
9

13/26= x/24 solve for x

Mathematics
2 answers:
Oksi-84 [34.3K]3 years ago
6 0

Answer:

12

Step-by-step explanation:

you would multiply both sides by 24

Serga [27]3 years ago
3 0

Answer: x = 12

Step-by-step explanation:

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At a university, 12% of students smoke. Calculate the expected number of smokers in a random sample of 140 students from this un
Masteriza [31]

Answer:

a) The expected number of smokers in a random sample of 140 students from this university is 16.8 smokers.

b) No, it is unlikely that smoking habits and waking up early to go to the gym on Saturday are independent.

Step-by-step explanation:

To calculate the expected numbers of smokers in a sample with size n=140 and proportion p=12%, we use the expected value of the binomial distribution:

E(x)=n\cdot p=140\cdot 0.12=16.8

The expected number of smokers in a random sample of 140 students from this university is 16.8 smokers.

If we take a sample at the opening of the gym, the sample is not expected to be representative of the population of the students. Most of the students that go to the gym usually have healthy habits, so the proportions of smokers is expected to be lower than the average of the university population.

4 0
2 years ago
I need the answer quickly
sweet [91]

Answer:

scatter plot 3

Step-by-step explanation:

No correlation exists when there is no relationship between two variables. For example there is no relationship between the x-axis to the y-axis while the other plots has noticeable linear correlation.

6 0
2 years ago
Find the mean and range 26 19 23 39 31 34 23 25
Delicious77 [7]
I got 27.5 for the mean
mean: you add up all the #'s and divide them my their quantity( in other words by how many numbers there are)
In your case you have 8 numbers, you add them and divide them by 8!

Hope it helps ;)
4 0
2 years ago
A lamp shade has a radius of 9 inches. What is the circumference of the top of the shade? Use 3.14 to approximate pi. Round your
Black_prince [1.1K]

c = circumference pi = 3.14 r = radius = 9 inches d = diameter c=pi*d The radius is half of the diameter, d = 2r. Then d = 2*9=18. plug into equation. c= pi*d = 3.14*18 round accordingly and you may want to include that the measurement you end up with is in inches.

4 0
2 years ago
Read 2 more answers
23 points to whoever can answer this question !!
Tamiku [17]

-2 2/5

as an improper fraction

-(5*2 +2)/5 -12/5

-12 divided by 5


3 0
3 years ago
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