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3 years ago

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Select all ordered pairs that correspond to input-output pairs for the equation y = 6x + 4. A. (2, 10) B. (3, 22) (5, 34) +2/3 D

. (-1,-2)

1 answer:

dezoksy [38]3 years ago

4 0

Answer:

B

Step-by-step explanation:

6*3=18+4=22 6*5=30+4=3

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The amount of time the husband and the wife spend on house work is measured for 15 women and their 15 husbands. For the wives th

dolphi86 [110]

Answer:

The value of the test statistic is z = -0.877.

Step-by-step explanation:

Testing the difference in mean time spent on housework between husbands and wives.

At the null hypothesis, we test if there is no difference, that is, the subtraction of the means is 0:

$H_0: \mu_H - \mu_W = 0$

At the alternate hypothesis, we test if there is a difference, that is, the subtraction of the means is different from 0.

$H_1: \mu_H - \mu_W \neq 0$

The test statistic is:

$z = \frac{X - \mu}{s}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, and s is the standard error.

0 is tested at the null hypothesis:

This means that $\mu = 0$

For the wives the mean was 7 hours/week and for the husbands the mean was 4.5 hours/week. The standard deviation of the differences in time spent on house work was 2.85.

This means that $X = 4.5 - 7 = -2.5, s = 2.85$

What is the value of the test statistic for testing the difference in mean time spent on housework between husbands and wives?

$z = \frac{X - \mu}{s}$

$z = \frac{-2.5 - 0}{2.85}$

$z = -0.877$

The value of the test statistic is z = -0.877.

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3 years ago

city planner is making a scale model of his city for his office building. The model has a coordinate grid where each unit is 1 m

Lelechka [254]

Answer:

(4, 1)

Step-by-step explanation:

For any rectangle or square located on the axes, match the pairs and find what's missing. 3 -- 3, 4 -- 4. unmatched are 4 and 1. 4 is x because it's missing from x and same for 1 and y.

plz mark me Brainliest

This has already been asnwered on brainly

5 0

3 years ago

What is the volume of a cylinder with a radius of 9 inches and a height of 2 inches? Use 3.14 for pi. Round your answer to the n

Luden [163]

561.75 is your answer i hope i helped you get it right

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2 years ago

Which number represents 59% of 74??

alexandr1967 [171]

Answer:

43.66

Step-by-step explanation:

Just calculate 59% of 74

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2 years ago

An experiment requires 500 mL. One of the ingredients to be mixed with 1,000 mL of another. How many liters is the solution

shepuryov [24]

1.5 liters all together!

Hope that helps!
-procklownyt

6 0

2 years ago

Read 2 more answers