Concept explainers
(a)
To Find: how long you can afford to stay in Kyrgyzstan, on average.
(a)
Answer to Problem 27RE
21 days
Explanation of Solution
Given:
It could be predicted to spend approximately 4237 some every day.
Formula used:
Calculation:
budget makes it possible to invest 90000.
Let's assume you should stay for 'n' days, suppose.
Let the amount spent on each day be X.
It can stay for 21 days.
(b)
To find: the standard deviation of expenses for the trip of that duration.
(b)
Answer to Problem 27RE
7560
Explanation of Solution
Formula used:
Calculation:
Standard deviation is
(c)
To find: how much extra cash you might bring on average, how much a "cushion" would have every day.
(c)
Answer to Problem 27RE
34.29
Explanation of Solution
Let the total expenditure be T.
Y is the expectation of
T-Y > 2SD
T-Y > 2(360)
>720som
So we need to bring 720som more.
The cushion there would have per day is
Chapter PIV Solutions
Stats: Modeling the World Nasta Edition Grades 9-12
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