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3 years ago

1. The drama club sells 200 pounds of fruit to raise money. The fruit is sold in

1 answer:

4 0

I got the wrong answer. I don't want to keep this up just in case anyone needs the answer to this question again. But I can't delete my answer so I'll just leave this. Have a nice day tho. Sorry about that :(

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what is an equation in the point-slope form of the line that passes through (-3,-1) and has a slope of 2?

LuckyWell [14K]

Answer:

well it would have to be y=2x-3

Step-by-step explanation:

yup

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3 years ago

Write an exponential function for the graph that passes through the points (0,4) and (2, 36). Use the formula y=ab^x

fomenos

Answer:

Using the equation y = abx , substitute both of your given points into that equation.

2 = ab2 and 4 = ab3 Solve each equation for a.

2⁄b2 and 4⁄b3 = a Therefore, 2⁄b2 = 4⁄b3

Cross multiply: 2b3 = 4b2 Divide both sides by b2

2b = 4 a = 2/4 = 1/2

b = 2

y = 1 (2)x

Step-by-step explanation:

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3 years ago

Bert measured a swimming pool and made a scale drawing. The scale of the drawing was

Cerrena [4.2K]

1/100
Each meter is 100 centimeter

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3 years ago

Need help please On all three

Pepsi [2]

Answer:

1. proportional relationship

2. constant of proportionality

3. unit rate.

I'm not exactly sure on these answers, so please double check them for me to make sure that they are correct.

Step-by-step explanation:

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3 years ago

When the sample size and the sample proportion remain the same, a 90 percent confidence interval for a population proportion p w

deff fn [24]

Answer:

A 90% confidence interval for p will be narrower than the 99% confidence interval.

Step-by-step explanation:

The formula to compute the (1 - α) % confidence interval for a population proportion is:

$CI=\hat p\pm z_{\alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n}}$

Here $\hat p$ is the sample proportion.

The margin of error of the confidence interval is:

$MOE= z_{\alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n}}$

The MOE is dependent on:

Confidence level
Standard deviation
Sample size

The MOE is directly related to the confidence level and standard deviation.

So if any of the two increases then the MOE also increases, thus widening the confidence interval.

And the MOE is inversely related to the sample size.

So if the sample increases the MOE decreases and vice versa.

It is provided that the sample size and the sample proportion are not altered.

The critical value of z for 90% confidence level is:

$z_{\alpha/2}= z_{0.10/2}=z_{0.05}=1.645$

And the critical value of z for 99% confidence level is:

$z_{\alpha/2}= z_{0.05/2}=z_{0.05}=1.96$

So as the confidence level increases the critical value increases.

Thus, a 90% confidence interval for p will be narrower than the 99% confidence interval.

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3 years ago