Mathematics, 25.07.2021 14:00 klrm8045
A box has 20 products (including 15 good products and 5 bad products). From the box to get
Randomly 3 products. Let X be the number of good products out of the 3 products.
a. Make a table of the probability distribution for X. Write the density function and the distribution function
for X.
b. Find the expectation and variance, the most confident value for X.
c. Let Y = 2X − 2. Find the expectation and variance for Y.
Answers: 2
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A box has 20 products (including 15 good products and 5 bad products). From the box to get
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