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danthehero56
12.10.2019 •
Mathematics
The distance around a neighborhood is 4 miles. when clicking it with an odometer, the distance was 3.8 miles. what is the percent error?
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Ответ:
5%
Step-by-step explanation: 5% of 4 is .2 which is then subtracted from 4
Ответ:
The mean time for commute is 22.46 minutes.
Step-by-step explanation:
We are given the following information in the question:
Standard Deviation, σ = 6.3 minutes
We are given that the distribution of commute times in a large city is a bell shaped distribution that is a normal distribution.
Formula:
P(more than 20 minutes to commute one-way) = 65.20% = 0.6520
P(X > 20) = 0.6520
Calculation the value from standard normal z table, we have,
Solving, we get,
The mean time for commute is 22.46 minutes.