2 years ago

Please help! i don't understand

Mathematics

1 answer:

Over [174]2 years ago

8 0

Answer:

x will be 13 here

ask for any explanation you want

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Two samples each of size 25 are taken from independent populations assumed to be normally distributed with equal variances. the

NeTakaya

$n_1=25, n_2=25\\ \bar{X_1}=35.5, \bar{X_2}=33\\ s_1=3, s_2=4$

Pooled Combined Variance $s_p=12.5$

Test Statistic:

$t=\frac{\left(\bar{X_1}-\bar{X_2}\right)}{s_p\sqrt{\frac{1}{n_1}+\frac{1}{n_2}}}$

$t=\frac{\left(35.5-33\right)}{12.5\sqrt{\frac{1}{25}+\frac{1}{25}}}$

$\left|t\right|=0.01414$

Degrees of freedom = $n_1+n_2-2=25+25-2=48$

$\alpha =0.05$

$t-Critical =t_{\alpha /2, n_1+n_2-2}=t_{0.025, 48}=-2.0206 \\Table value=|t|=2.0206\\|t|=2.0206$

The table value is greater than the calculated value.

Thus we accept H0.

8 0

2 years ago

A farmer randomly inspected 16 of his 93 peach trees for signs of disease. Two of those trees showed signs of disease. Find .

Dmitriy789 [7]

<span>I think you wanted to find p̂, or "p-hat". This is simply the proportion of the sample. So:

p̂ = 16/93 ~= 0.172

Hope this helps :)</span>

4 0

2 years ago

Read 2 more answers

How do you do this i am lost

Jet001 [13]

Answer:

The solution is (-2, 4)

Step-by-step explanation:

When finding the solution of system of equations, you need to find where both lines intersect.

In the graph shown, the light purple and dark purple line meet at (-2, 4).

Hope this helps!!

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2 years ago

Write a function rule using function notation that will transform a

jok3333 [9.3K]

Answer:

Step-by-step explanation:

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2 years ago

Sammy is an hourly employee who makes $26 per hour as an elevator technician. He is paid overtime $13 for every hour that he wor

oksian1 [2.3K]

Answer:

364$

Step-by-step explanation:

you multiply 26 times 13 which equals 364

8 0

3 years ago