The probability that it will be hot today is 0.4, the probability that it will be hot tomorrow is 0.5 and the probability it is hot both days is 0.2. What is the probability that it will be hot today or tomorrow?

a. 0.7
b. 0.11
c. 0.9
d. 0

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2

Cor d? ? me ? max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)