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Nikolay [14]
3 years ago
10

Eli ran 3/4 of a mile. Every 1/8 of a mile, he jumped over a hurdle. There was a final hurdle at the 3/4 mile park. How many hur

dles did Eli jump over?​
Mathematics
1 answer:
agasfer [191]3 years ago
5 0
Divide 3/4 by 1/8 and you should get 6 hurdles.
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A study was done to determine the average number of homes that a homeowner owns in his or her lifetime. For the 50 homeowners su
ipn [44]

Answer:

The 95% confidence interval for the true average number of homes that a person owns in his or her lifetime is (4,6.2).

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom,which is the sample size subtracted by 1. So

df = 50 - 1 = 49

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 49 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.0096

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2.0096\frac{3.8}{\sqrt{50}} = 1.1

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 5.1 - 1.1 = 4

The upper end of the interval is the sample mean added to M. So it is 5.1 + 1.1 = 6.2.

The 95% confidence interval for the true average number of homes that a person owns in his or her lifetime is (4,6.2).

7 0
2 years ago
Work out 4 1/7 + 1 1/2
Iteru [2.4K]

Answer:

5 9/14

Step-by-step explanation:

8 0
3 years ago
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What is the range of y=3sin(x)?
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Answer:

The range is -3≤y≤3 - 3≤y≤3.

Step-by-step explanation:

I hope this helps! :)

6 0
2 years ago
Find the distance between the points 3,7 and 15, 12 on the coordinate plane?
lana [24]
\text{Distance } = \sqrt{ (x_2 -x_1)^2 + (y_2 - y_1)^2}

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8 0
3 years ago
Please help ASAP!!!!!​
HACTEHA [7]
It’s D, y = 4.
have a good day :)
6 0
3 years ago
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