8.4 Option ‘Inverse Cumulative Probability’

Contrary to the previous option, this provides the value of the variable associated with a specific cumulative probability:

Be aware not to use the option Probability density to compute probabilities in a continuous distribution.

Example 8.1:

A machine produces 5% of defective parts. If packed in boxes of 100 units, calculate:

a) The probability that a box has exactly three defective units.

The number of defective units in a box is a random variable that follows a binomial distribution. The probability that this variable takes a certain value (3) is of interest now:

Calc > Probability Distributions > Binomial

b) The probability that a box has less than three defective units.

Example 8.2:

A packaging process specializes in filling containers. The weight of containers is normally distributed with a mean of 975 g and ...

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