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3 years ago

Find the value of X????

Mathematics

2 answers:

Nataly_w [17]3 years ago

5 0

Answer:

x=110

Step-by-step explanation:

Novay_Z [31]3 years ago

5 0

Answer:

x = 110

Step-by-step explanation:

x=110 cuz the other side is 110 they are equal i think

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The following table shows the weights of nine subjects before and after following a particular diet for two months. Test the cla

Annette [7]

Using the t-distribution, it is found that there is not enough evidence that the diet is helping people lose weight.

<h3>What are the hypothesis tested?</h3>

At the null hypothesis, it is tested if the mean hasn't decreased, that is:

$H_0: \mu_B \leq \mu_A$

$H_0: \mu_B - \mu_A \leq 0[qtex]At the alternative hypothesis, it is tested if the mean has decreased, that is:[tex]H_1: \mu_B - \mu_A > 0[qtex]What are the mean and the standard error for the distribution of differences?For each sample, they are given as follows:[tex]\mu_B = 170.44, s_B = \frac{29.275}{\sqrt{9}} = 9.7583$ .

$\mu_A = 160.56, s_A = \frac{24.203}{\sqrt{9}} = 8.067$ .

Hence, for the distribution of differences, they are:

$\overline{x} = \mu_B - \mu_A = 170.44 - 160.56 = 9.88$ .

$s = \sqrt{s_B^2 + s_A^2} = \sqrt{9.7583^2 + 8.067^2} = 11.66$

<h3>What is the test statistic and the decision?</h3>

The test statistic is:

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

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

Hence:

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

$t = \frac{9.88 - 0}{11.66}$

t = 0.85.

Considering a right-tailed test with 9 + 9 - 2 = 16 df, with a standard significance level of 0.05, the critical value is t = 1.7459. Since t = 0.85 < 0.85, there is not enough evidence that the diet is helping people lose weight.

More can be learned about the t-distribution at brainly.com/question/13873630

#SPJ1

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2 years ago

In ΔXYZ, m∠X = 90° and m∠Y = 30°. In ΔTUV, m∠U = 30° and m∠V = 60°. Which is true about the two triangles

tigry1 [53]

M<X=m<T=90 degree
m<Y=m<U=30 degree
m<Z=m<V=60 degree
they are both right triangles
They are congruent by AA theorem<span />

4 0

3 years ago

Read 2 more answers

Simplify 6+5m/3=m-2

nikitadnepr [17]