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OverLord2011 [107]

2 years ago

5

Keely scored 128 points, which was 4 times as many points as Grayson scored. Which equation can be used to find the number of po

ints Grayson scored?

1 answer:

Ludmilka [50]2 years ago

4 0

Answer:

32

Step-by-step explanation:

take 128 divide by 4

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Use the sample data and confidence level to construct the confidence interval estimate of the population proportion p. n equals

FrozenT [24]

Answer:

(0.2599,0.3401)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 500

x = 150

$\hat{p} = \dfrac{x}{n} = \dfrac{150}{500} = 0.3$

Confidence interval:

$\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96$

Putting the values, we get:

$0.3\pm 1.96\sqrt{\dfrac{0.3(1-0.3)}{500}} = 0.3 \pm 0.0401 =(0.2599,0.3401)$

The 95% confidence interval is (0.2599,0.3401).

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3 years ago

How i do 46 2/3% of 28

scoray [572]

28 - 100%
x - 46 $\frac{2}{3}$

28 : 100 = х : 46 $\frac{2}{3}$
х = 46 $\frac{2}{3}$ * 28 : 100
x = 13 $\frac{1}{5}$ - the answer.

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3 years ago

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