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Anettt [7]
3 years ago
12

Which of the following numbers is closest to the product of 48.9x21.2

Mathematics
1 answer:
Marina CMI [18]3 years ago
3 0
The answer is C because 48.9 multiplied by 21.2 is 1036.68
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Dixon and his little sister Ariadne stand next to each other on the playground on a sunny afternoon. Their mother measures their
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Ariadne is 5 feet tall because 18 is 6x3 which would mean you would have to divide 15 by three to get the answer which is 5.
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3 years ago
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Young children in the United States are exposed to an average of 4.0 hours of background
Norma-Jean [14]

Answer:

The critical value approach and the p-value approach gave the same result.              

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 4 hours

Sample mean, \bar{x} = 4.5

Sample size, n = 460

Alpha, α = 0.051

Population standard deviation, σ = 1.00 hour

First, we design the null and the alternate hypothesis

H_{0}: \mu = 4.00\text{ hours}\\H_A: \mu > 4.00\text{ hours}

We use One-tailed z test to perform this hypothesis.

Formula:

z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

z_{stat} = \displaystyle\frac{4.5 - 4}{\frac{1}{\sqrt{60}} } = 3.87

Now, z_{critical} \text{ at 0.01 level of significance } = 2.326

Since,  

z_{stat} > z_{critical}

We reject the null hypothesis and accept the alternate hypothesis. Thus, low-income families are exposed to more than 4.0 hours of daily background television.

p value at z-stat 3.87 is 0.000054. Since p-value is less than the significance level. We reject the null hypothesis.

Hence, the critical value approach and the p-value approach gave the same result.

5 0
3 years ago
It is 3,452 miles round trip to Craigs Aunts house. If he travels to her house 3 times a year, how many miles did he travel in a
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10,356 
3452 x 3 =10,356
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Francis scores 3 more than 2 times the number of points that riad scores if r represents the number of points riad scores which
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The answer is C. 2r+3
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marcus plans to paint a bright green rectangle on the bottom of his pool. He has enough to cover an area of 273 square feet. He
Anuta_ua [19.1K]

The length of the rectangle that makes the area to be 273 square feet is 21 feet.

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

Let x represent the length of the rectangle, hence:

Length * width = area

13 * x = 273

x = 21 feet

The length of the rectangle that makes the area to be 273 square feet is 21 feet.

Find out more on equation at: brainly.com/question/2972832

#SPJ1

6 0
1 year ago
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