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umka2103 [35]
3 years ago
5

And I also need help in this one.

Mathematics
1 answer:
Dvinal [7]3 years ago
5 0
Hey bestie I’m pretty sure it’s 1:3
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Which shape below DOES NOT have volume?
NNADVOKAT [17]

Answer:

D. Cone

Step-by-step explanation:

i am sorry if incorrect

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22-28d = - 12 ??? geometry is hard
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There's not much you can or should do here other than to "solve for d."

Subtract 22 from both sides.  Then 22 - 22 - 28d = -12 - 22 = -34

Then -28d = -34, and d = -28 / (-34) = + 14/17 (answer)
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6 0
3 years ago
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
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