1) The speed of 100 cars was measured on a road with a speed limit of 90 km/h. The data was found to be approximately normal with a mean of 88 km/ h and standard deviation of 1.0km/h. a) How many cars were driving at a speed between 87km/h and 89km/h? b) How many vehicles were fined between 90km/h and 91km/h for exceeding the speed limit?

MATLAB: An Introduction with Applications
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1) The speed of 100 cars was measured on a road
with a speed limit of 90
km/h. The data was found to be approximately
normal with a mean of 88 km/
h and standard deviation of 1.0km/h.
a) How many cars were driving at a speed
between 87km/h and 89km/h?
b) How many vehicles were fined between
90km/h and 91km/h for
exceeding the speed limit?
Transcribed Image Text:1) The speed of 100 cars was measured on a road with a speed limit of 90 km/h. The data was found to be approximately normal with a mean of 88 km/ h and standard deviation of 1.0km/h. a) How many cars were driving at a speed between 87km/h and 89km/h? b) How many vehicles were fined between 90km/h and 91km/h for exceeding the speed limit?
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