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3 years ago

Please help me on this question

Mathematics

2 answers:

NeX [460]3 years ago

8 0

D. 42,240

9.7 - 1.7 = 8 miles
Multiply 8 by 5280 to convert it to feet
8 * 5280 = 42,240

Murrr4er [49]3 years ago

7 0

Answer:

D 42,240 ft

Step-by-step explanation:

First find how many miles Anil rides.

9.7-1.7 = 8 miles

There are 5280 feet in 1 mile.

5280*8= 42,240 ft

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3 years ago

An article reported on the results of an experiment in which half of the individuals in a group of 60 postmenopausal overweight

slavikrds [6]

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Step-by-step explanation:

From the given information:

Let's first compute the null and alternative hypothesis

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Alternative hypothesis:

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$df = \dfrac{\begin {pmatrix} \dfrac{3.1^2}{30} + \dfrac{2.7^2}{30} \end {pmatrix}^2 } {\dfrac{ \begin {pmatrix} \dfrac{3.1^2}{30} \end {pmatrix}^2}{ 30-1} + \dfrac{ \begin {pmatrix} \dfrac{2.7^2}{30} \end {pmatrix}^2}{ 30-1} }}$

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The test statistics can be computed as follows:

$t = \dfrac{ \overline x_1 -\overline x_2- (\mu_1 -\mu_2)}{\sqrt{ \dfrac{s_1^2}{n_1} +\dfrac{s_2^2}{n_2} }}$

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olga2289 [7]

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