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RUDIKE [14]
3 years ago
12

The price of a community pool membership has a one-time sign-up fee and a monthly fee. The price can be modeled by the function

y = 20x + 50, where x is the number of months.
What is the slope, and what does it represent? (1 point)


1. 20; it represents the monthly fee
2. 20; it represents the one-time sign-up fee
3.50; it represents the monthly fee
4. 50; it represents the one-time sign-up fee
Mathematics
1 answer:
Misha Larkins [42]3 years ago
8 0
Your answer is option 1.
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Answer:

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Answer:

a. 1.44

Step-by-step explanation:

We are interested in determining whether or not the proportion of the population in favor of Candidate A is significantly more than 40%.

At the null hypothesis, it is tested if the proportion is of at most 40%, that is:

H_0: p \leq 0.4

At the alternative hypothesis, it is tested if the proportion is of more than 40%, that is:

H_1: p > 0.4

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

0.4 is tested at the null hypothesis:

This means that p = 0.4, \sigma = \sqrt{0.4*0.6}

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This means that:

n = 200, X = \frac{90}{200} = 0.45

Value of the test statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{0.45 - 0.4}{\frac{\sqrt{0.4*0.6}}{\sqrt{200}}}

z = 1.44

Thus the correct answer is given by option a.

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