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harkovskaia [24]
2 years ago
7

Type the correct answer In each box. If neessary, use / for the fraction bar(s). If a = 0.6 and b=0.75, then a b = and a/b=​

Mathematics
1 answer:
lubasha [3.4K]2 years ago
5 0

Answer:

Socratic app

Step-by-step explanation:

it will help you

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A car increases, then decreases, its speed. Which table could represent the speed of the car?
lakkis [162]

Answer:

B is answer

Step-by-step explanation:

3 0
2 years ago
if there are 20 vakues in a data set in order from smallest to largest what is the median of the data set
Bumek [7]
To find the median of 20 values, list the values from smallest to largest then add the 10th and 11th number then divide by 2 and you get your median.
5 0
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
90-80*2-2 <br> plz helpppppppppppppppppp
Flauer [41]

Answer:

18

Step-by-step explanation:

90-80=10

10*2=20

20-2=18

7 0
2 years ago
Read 2 more answers
Help please anyone up
saul85 [17]
Since area is length times width, it would be the factors of the equation for the area.
X2+11x+28 factors into...
Length is x+7 so...
Width is x+4
7 0
3 years ago
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