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4 years ago

True or false: The y-intercept is (0.3) and it represents the initial cost of the ride.

Mathematics

1 answer:

Leni [432]4 years ago

7 0

The answer is True.

Since we are talking about the cost of something, and whenever you have a y-intercept, it means the price.

The y-intercept represents the initial cost of the taxi ride then how many miles you ride for, the more you pay plus the initial cost.

Best of Luck!

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3 years ago

Read 2 more answers

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UNO [17]

Answer:

We need a sample size of at least 650

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

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Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

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Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

In this problem:

We need a sample of size at least n

n is found when $M = 0.005, \sigma = 0.065$

$M = z*\frac{\sigma}{\sqrt{n}}$

$0.005 = 1.96*\frac{0.065}{\sqrt{n}}$

$0.005\sqrt{n} = 1.96*0.065$

$\sqrt{n} = \frac{1.96*0.065}{0.005}$

$(\sqrt{n})^{2} = (\frac{1.96*0.065}{0.005})^{2}$

$n = 649.23$

Rounding up

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4 years ago

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