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almond37 [142]
1 year ago
5

I need help asappppp

Mathematics
1 answer:
Minchanka [31]1 year ago
6 0

Answer:

a = 11, b = 7

Step-by-step explanation:

See picture

Download pdf
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0.185 repeating as a fraction??
Leya [2.2K]
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<span>37 over 200</span>
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Paul polled his classmates about their favorite color. He drew this circle graph to show his data.
ss7ja [257]

Answer:

he most popular color is .

blue

The least popular color is .

purple

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Step-by-step explanation:

its right ,i did it.

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3 years ago
Please Help! Multiple Choice!
Katyanochek1 [597]

Using the z-distribution, the p-value would be given as follows:

b) 0.0086.

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

At the null hypothesis we test if the means are equal, hence:

H_0: \mu_D - \mu_C = 0

At the alternative hypothesis, it is tested if they are different, hence:

H_1: \mu_D - \mu_C \neq 0

<h3>What are the mean and the standard error for the distribution of differences?</h3>

For each sample, they are given as follows:

  • \mu_D = 12, s_D = \frac{5.2}{\sqrt{73}} = 0.6086
  • \mu_C = 14, s_C = \frac{4.1}{\sqrt{81}} = 0.4556

Hence, for the distribution of differences, they are given by:

  • \overline{x} = 12 - 14 = -2.
  • s = \sqrt{0.6086^2 + 0.4556^2} = 0.76

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

The test statistic is given by:

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

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

Hence:

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

z = \frac{-2 - 0}{0.76}

z = -2.63.

Using a z-distribution calculator, for a two-tailed test, with z = -2.63, the p-value is of 0.0086.

Hence option B is correct.

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

#SPJ1

4 0
2 years ago
Trent bought four pounds of deli turkey for $2.68 per pound. How much did he spend? $8.42​
Thepotemich [5.8K]

Answer:

$10.72

Step-by-step explanation:

$2.68 * 4pounds = $10.72

5 0
2 years ago
Read 2 more answers
-77.35 in a fraction
nikitadnepr [17]
-77 and 7/20 is the answer simplified and without it being simplified you get -77 and 35/100
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