Kasi Skyrider, an amateur motorcycle racer, averages 130 seconds per lap with a standard deviation of...

Kasi Skyrider, an amateur motorcycle racer, averages 130 seconds per lap with a standard deviation of 2.3 seconds. The distribution of her lap times is normally distributed. We are interested in one of her randomly selected laps.

(2%) X∼ (
,
) .

(3%) What is the probability that her laps are completed in less than 130 seconds?

(3%) The fastest 3% of her laps are completed in under
seconds .

(3%) The middle 80% of her laps are completed in between
seconds and
seconds.

Solutions

Expert Solution

orchestra answered 1 year ago

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