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il63 [147K]
3 years ago
13

Andrea's family stopped at the gas station to get gas. At gas stations, the price of gas per gallon is given to the nearest thou

sandth. In order to determine how much money he would need to pay for the gas, Andrea's dad asked her to round the price of gas per gallon to the nearest hundredth.
The gas price per gallon rounded to the nearest hundredth was $2.50. Which of the following prices could have been the original gas price?

$2.493
$2.505
$2.509
$2.498
Mathematics
1 answer:
Evgen [1.6K]3 years ago
5 0

Answer:

$2.498

Step-by-step explanation:

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For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.
horsena [70]

Answer:

a) p = 0.6346

b) 95% confidence interval

Lower limit: 0.5951

Upper limit: 0.6741      

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 572

Number of Santa Fe black-on-whitepots , x = 363

a) proportion of Santa Fe black-on-white potsherds

\hat{p} = \dfrac{x}{n} = \dfrac{363}{572} = 0.6346

b) 95% confidence interval

\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

Putting the values, we get:

0.6346\pm 1.96(\sqrt{\frac{0.6346(1-0.6346)}{572}}) = 0.6346\pm  0.0395\\\\=(0.5951,0.6741)

Lower limit: 0.5951

Upper limit: 0.6741

5 0
3 years ago
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vovangra [49]
A. $5.95 is the answer
6 0
3 years ago
Identify a benchmark to find the equivalent percent for 6/10
Oxana [17]
60%=6/10

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4 0
4 years ago
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Is -8 + 3 = -8 - (-3) a true statement, and why??​
Greeley [361]

Answer:

yes

Step-by-step explanation:

because -8+3=-5, and -8-(-3) has to cancel out the 2 negatives which will change it to -8+3 which makes it the same question

7 0
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What is the total cost to conduct a market research survey with a $500 base fee plus $3 per question and $1.25 per person survey
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4 years ago
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