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Suit Sales The number of suits sold per day at a retail store is shown in the table, with the corresponding probabilities. Number of suits
Suit Sales The number of suits sold per day at a retail store is shown in the table, with the corresponding probabilities.
Number of suits sold X | 17 | 18 | 19 | 20 | 21 |
Probability PX | 0.2 | 0.2 | 0.3 | 0.1 | 0.2 |
Find the variance. Round your answer to one decimal place as needed.
Variance: =2 |
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