Speed=distance/time
we need to findn her distance in miles and times in hous
440 yards times 4 laps=1760 yards
1760 yards=1 mile
distance=1 miles
time
10 minutes
60 minutes per hour
1/6 hour
1 miler per (1/6) hour
multiply by 6
6 miles per 1hour
6 miles pe hour
The interval around the mean that contains 95% of the airfare is (250.2,524.2).
Normal Distribution is bell shaped and symmetrical in nature.
We use standard normal to find probabilities of normal distribution
Normal distributions have key characteristics that are easy to spot in graphs: The mean, median and mode are exactly the same. The distribution is symmetric about the mean—half the values fall below the mean and half above the mean. Diagram below shows standard normal figure.
In a normal distribution, 95% of the values fall between mean±2*sd
Give: mean=387.20
sd=68.50
So the interval around the mean that contains 95% of the airfare is (250.2,524.2).
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