The sum of the first 70 positive odd integers.
1 answer:
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Answer:
<u>Leila pays more</u> than Andy to fly from the UK to Australia.
Step-by-step explanation:
Given:
Andy flies from the UK to Japan.
His plane ticket costs £554.
Andy then flies from Japan to Australia.
His plane ticket costs 70 140 Japanese Yen.
The exchange rate is £1 = 140 Japanese Yen.
Leila flies from the UK to Australia.
Her plane ticket costs 1860 Australian dollars.
The exchange rate is 1 Australian dollar = £0.62.
<u>Now, to find Andy or Leila who pays more to fly from the UK to Australia.</u>
Andy flies from the UK to Japan.
His plane ticket costs = £554.
Andy then flies from Japan to Australia.
His plane ticket costs 70 140 Japanese Yen.
The exchange rate is £1 = 140 Japanese Yen.
So, by using conversion factor we convert Japanese Yen to £.
140 = £1
70140 =
His plane ticket costs = £501.
Now, adding both the cost of tickets:
Andy total pays fly from the UK to Australia is £1055.
Now, to get the cost of plane ticket of Leila from the UK to Australia.
Her plane ticket costs 1860 Australian dollars.
The exchange rate is 1 Australian dollar = £0.62.
So, by using conversion factor:
1 Australian dollar = £0.62
1860 Australian dollar =
Her plane ticket costs is £1153.2.
<u><em>As, we see that cost of plane ticket of Andy is £1055 and cost of plane ticket of Leila is £1153.2.</em></u>
<em>Thus, Leila pays more.</em>
Therefore, Leila pays more than Andy to fly from the UK to Australia.
Answer:
So on this case the 90% confidence interval would be given by (6.86;9.54) And the error is given by:
Step-by-step explanation:
Previous concepts
A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".
The margin of error is the range of values below and above the sample statistic in a confidence interval.
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
represent the sample mean for the sample
population mean (variable of interest)
represent the population standard deviation
n represent the sample size
Solution to the problem
The confidence interval for the mean is given by the following formula:
(1)
Since the Confidence is 0.90 or 90%, the value of and
, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.005,0,1)".And we see that
Now we have everything in order to replace into formula (1):
So on this case the 90% confidence interval would be given by (6.86;9.54) And the error is given by:
