In a group of 200 items, if the probability of getting a defective item is 0.2, write the mean of the distribution.

The items produced by a company contain 10% defective items. Show that the probability of getting 2 defective items in a sample of 8 itmes is frac{28xx9^6}{10^8} .

If the probability of defective bolts is 0.1, find the mean and standard deviation for the distribution of defective bolts in a total of 400 bolts.

If the probability of defective bolts is 0.1, find the mean and standard deviation for the distribution of defective bolts in a total of 500 bolts.

A group of 10 items has mean 6 If the mean of 4 of these items is 7.5 then the mean of the remaining items is

A group of 10 items has mean 6. If the mean of 4 of these items is 7.5, then the mean of the remaining items is

The items produced by a company contain 10% defective items. Show that the proximity of getting 2 defective items in a sample of 8 items is (28xx9^6)/(10^8) .

The items produced by a company contain 10% defective items.Show that the proximity of getting 2 defective items in a sample of 8 items is (28xx9^(8))/(10^(8))

A group of 10 items has arithmetic mean 6. If the arithmetic mean of 4 of these items is 7.5, then the mean of the remaining items is

A group of 10 items has arithmetic mean 6. If the arithmetic mean of 4 of these items is 7.5, then the mean of the remaining items is