Math Answers

A card is drawn from a deck of 20 cards (all the cards numbered 1 to 5 in a standard check) and the random variable W gives the number on the card. Construct the probability mass function and its corresponding histogram.

Prove that

lim 1/(x+5)^2 = ∞

x→-5

Prove or disprove: Every subgroup of the integers has finite index.

Hence ,write down the equation with y as subject ( in terms of x ) to represent the production cost.the value of a,b and c must be indicated

If two coins are tossed, which is not a possible value of the random variable for the number of heads?

The sidewall of a cylindrical tank of radius 30 cm and height of 1 m should be lined with a 4 cm thick layer of concrete.

The sidewall of a cylindrical tank of radius 30 cm and height of 1 m should be lined with a 4 cm thick layer of concrete.

Calculate the volume of the cylinder

Answer: What is approximately the amount of concrete required?

fifty android tablet will be Delivered to a certain school for testing but five of them are defective.The principal will get two of these tablets for testing.Let X represent the defective tablet,Y for non defective tablet and Z represents the random variable for which a non defective tablet will occur.find the variables of Z

Find the indicated IQ score. The graph to the right depicts IQ scores of​ adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. with the distribution of 0.75

A fair spinner has 9 equal sections: 2 red, 3 blue and 4 green.

It is spun twice.

What is the probability of getting not green then green?

When a ball is dropped unto a floor, it always rebound a distance equal to 3/2 of the height it fell. If the original height was Hmeters, how high will it rise after the 5th bounce