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.

The data in the table represent the height of an object over time. which model best represents the data? height of an object time (seconds) height (feet) 05 1 50 2 70 3 48 quadratic, because the height of the object increases or decreases with a multiplicative rate of change quadratic, because the height increases and then decreases exponential, because the height of the object increases or decreases with a multiplicative rate of change exponential, because the height increases and then decreases

Find the perimeter of the figure shown above. a. 40 cm c. 52 cm b. 60 cm d. 75 cm select the best answer from the choices provided

Acertain volume of water contains 100000 hydrogen atoms and 50,000 oxygen atoms how many hydrogen atoms are in a volume of water containing 4 million oxygen atoms