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1 Student exam results as a percentage are modelled by a Normal distributionwhere X~ N(75, 100). Find the probability that an individual percentage is greater than 85% Give your answer correct to 3 d.p. Type your answer.

1 Student exam results as a percentage are modelled by a Normal distributionwhere X~ N(75, 100). Find the probability that an individual percentage is greater than 85% Give your answer correct to 3 d.p. Type your answer.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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1 Student exam results as a percentage are modelled by a Normal distributionwhere X- N(75, 100). Find the probability that an individual percentage is greater than 85% Give your answer correct to 3 d.p. Type your answer. 2 Lengths of metal rulers produced by a machine are normally distributed with a mean length of 30 cm and a standard deviation of 0.1 cm. Find the probability that the length of a randomly selected ruler is shorter than 29.8 cm Give your answer correct to 3 d.p. Type your answer.
Transcribed Image Text:1 Student exam results as a percentage are modelled by a Normal distributionwhere X- N(75, 100). Find the probability that an individual percentage is greater than 85% Give your answer correct to 3 d.p. Type your answer. 2 Lengths of metal rulers produced by a machine are normally distributed with a mean length of 30 cm and a standard deviation of 0.1 cm. Find the probability that the length of a randomly selected ruler is shorter than 29.8 cm Give your answer correct to 3 d.p. Type your answer.
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