05/09/24

In her MAT135 class, professor Alayeb found that the mean score of the first exam was 96.

what is the probability that a randomly selected score is between 71 and 82 ? ( 71 < x < 82) = 
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05/08/24

A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 133.7-cm and a standard deviation of 0.7-cm.
Find the probability that the length of a randomly selected steel rod is greater than 135.7-cm. P(X > 135.7-cm) = 
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05/17/21

Chi Square - Goodness of Fit
A psychic claims to be able to predict the future. You test the psychic's claim by flipping a quarter 20 times - the psychic guesses whether it will land heads or tails. You'd expect the psychic to... more
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