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Tatiana [17]
3 years ago
6

Write the ratio two fifths to 8 as a fraction in simplest form. PLEASE HELP

Mathematics
1 answer:
charle [14.2K]3 years ago
7 0

Answer:

the answer is b on oddesseyware

Step-by-step explanation:

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Plz help I need the answer with steps
defon
Now subtract 3 from 6
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3 years ago
A group of researchers are interested in the possible effects of distracting stimuli during eating, such as an increase or decre
Dmitry [639]

Using the t-distribution, it is found that since the p-value of the test is of 0.0302, which is <u>less than the standard significance level of 0.05</u>, the data provides convincing evidence that the average food intake is different for the patients in the treatment group.

At the null hypothesis, it is <u>tested if the consumption is not different</u>, that is, if the subtraction of the means is 0, hence:

H_0: \mu_1 - \mu_2 = 0

At the alternative hypothesis, it is <u>tested if the consumption is different</u>, that is, if the subtraction of the means is not 0, hence:

H_1: \mu_1 - \mu_2 \neq 0

Two groups of 22 patients, hence, the standard errors are:

s_1 = \frac{45.1}{\sqrt{22}} = 9.6154

s_2 = \frac{26.4}{\sqrt{22}} = 5.6285

The distribution of the differences is has:

\overline{x} = \mu_1 - \mu_2 = 52.1 - 27.1 = 25

s = \sqrt{s_1^2 + s_2^2} = \sqrt{9.6154^2 + 5.6285^2} = 11.14

The test statistic is given by:

t = \frac{\overline{x} - \mu}{s}

In which \mu = 0 is the value tested at the null hypothesis.

Hence:

t = \frac{25 - 0}{11.14}

t = 2.2438

The p-value of the test is found using a <u>two-tailed test</u>, as we are testing if the mean is different of a value, with <u>t = 2.2438</u> and 22 + 22 - 2 = <u>42 df.</u>

  • Using a t-distribution calculator, this p-value is of 0.0302.

Since the p-value of the test is of 0.0302, which is <u>less than the standard significance level of 0.05</u>, the data provides convincing evidence that the average food intake is different for the patients in the treatment group.

A similar problem is given at brainly.com/question/25600813

4 0
3 years ago
What is -2(-y) in expanded form ​
damaskus [11]

Answer:

2y

Step-by-step explanation:

(-2)(-y) = (-1)(2)(-1)(y) = (-1)^2\ccdot  2y = 2y

4 0
2 years ago
<img src="https://tex.z-dn.net/?f=%5Cint%5Climits%5E4_3%7Bx%5E%7B2%7D-x%20%7D%20%5C%2C%20dx" id="TexFormula1" title="\int\limits
melisa1 [442]

Answer:

\frac{53}{6}

Step-by-step explanation:

\int\limits^4_3 {x^2-x} \, dx

= [ \frac{x^3}{3} - \frac{x^2}{2} ] ← evaluate for upper limit - lower limit

= ( \frac{64}{3} - \frac{16}{2} ) - ( \frac{27}{3} - \frac{9}{2} )

= \frac{64}{3} - 8 - 9 + \frac{9}{2}

= \frac{155}{6} - 17

= \frac{53}{6}

5 0
3 years ago
How do u divide monomials?
pantera1 [17]
Different examples above! hope this helps c:

8 0
3 years ago
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