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Paha777 [63]
3 years ago
9

Over a three-day weekend, a rental car agency charges $65 to rent a car plus $0.30 for each mile traveled. If y represents the t

otal cost and x represents the total number of miles traveled, which function rule describes this pattern?
Mathematics
2 answers:
OverLord2011 [107]3 years ago
7 0
Total cost=variable cost+fixed cost
variable cost=miles traveled times cost per mile=x times 0.30 or 0.30x
fixed cost=$65

so

y=$0.30x+$65
raketka [301]3 years ago
5 0
I believe it would be y = $0.30x + $65
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Answer:

The population proportion is estimated to be with 99% confidence within the interval (0.1238, 0.2012).

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The formula for estimating the population proportion by a confidence interval is given by:

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

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\hat{p} is the sample's proportion of success, which in this case is the people that regularly lie during surveys,

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<u>First</u> we compute the \hat{p} value:

\hat{p}=\frac{successes}{n}=\frac{98}{603}=0.1625

<u>Next</u> we find the z-score at any z-distribution table or app (in this case i've used StatKey):

z_{\alpha /2}=2.576

Now we can replace in the formula with the obtained values to compute the confidence interval:

\hat{p}\pm z_{\alpha /2}\times\sqrt{\frac{\hat{p}\times(1-\hat{p})}{n}}=0.1625\pm 2.576\times\sqrt{\frac{0.1625\times(1-0.1625)}{603}}=(0.1238, 0.2012)

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