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3 years ago

13

Which number is closest to the

2 answers:

disa [49]3 years ago

5 0

I think it is D
Hope my answer help you?

vagabundo [1.1K]3 years ago

5 0

Answer:

B. 16/11

Step-by-step explanation:

16/11 as a mixed number is 1 6/11. This is closest to 1 1/2 on the number line. The other negative numbers (-7/3, -5/5) are on the negative end on the spectrum so they are immediately eliminated. 3/7 doesn't have a whole number and therefore is not as close as 16/11 is to the point.

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A tire manufacturer is interested in testing the fuel economy for two different tread patterns. Tires of each tread type are dri

Minchanka [31]

Using the t-distribution, it is found that the 99% confidence interval for the difference is (0.058, 3.462).

We are given the <u>standard deviation for the samples</u>, hence, the t-distribution is used to solve this question.

The standard errors are given by:

$s_A = \frac{1.79}{\sqrt{18}} = 0.4219$

$s_B = \frac{1.95}{\sqrt{18}} = 0.4596$

For the distribution of differences, the <u>mean and the standard error</u> are given by:

$\overline{x} = \mu_A - \mu_B = 23.95 - 22.19 = 1.76$

$s = \sqrt{0.4219^2 + 0.4596^2} = 0.6239$

The interval is given by:

$\overline{x} \pm ts$

The critical value for a <u>two-tailed 99% confidence interval</u> with 18 + 18 - 2 = <u>34 df</u> is t = 2.7284.

Then:

$\overline{x} - ts = 1.76 - 2.7284(0.6239) = 0.058$

$\overline{x} + ts = 1.76 + 2.7284(0.6239) = 3.462$

The 99% confidence interval for the difference is (0.058, 3.462).

For more on the t-distribution, you can check brainly.com/question/16162795

3 0

3 years ago

It took a ball 4 hours to roll 276 miles. What was this ball's average speed, in miles per minute? (round to the nearest hundred

ASHA 777 [7]

Answer:

1.15 miles per minute was the balls average speed

Step-by-step explanation:

4 x 60 = 240 minutes

276 miles ÷ 240 minutes = 1.15 miles per minute

8 0

3 years ago

SWAN85 help right away

MrRissso [65]

Answer:

Step-by-step explanation:

1. the solution is the fourth one

2. the solution is the first one

3 0

3 years ago

Read 2 more answers

1.404 divided by 0.45

Ipatiy [6.2K]

The answer to your questions is 3.12

7 0

4 years ago

1. Rewrite the equation 5(x - 3) = x + 13 with 6 substituted for x. Write a

soldier1979 [14.2K]

Answer:

Step-by-step explanation:

5(6-3)=6+13 -simplify

30-15=6+13

15=19

x doesnt equal 6

5(x-3)=x+13

5x-15=x+13

4x=28

x=7

4x=28

4(7)=28

28=28

4 0

3 years ago