Arandomly selected value from a normal distribution is found to be 1.8 standard deviations above its mean.

a) what is the probability that a randomly selected value from the distribution will be greater than 1.8 standard deviations above the mean?
b) what is the probability that a randomly selected value from the distribution will be less than 1.8 standard deviations from the mean?

What are “like terms”? why can we only add like terms?

Use the frequency distribution, which shows the number of american voters (in millions) according to age, to find the probability that a voter chosen at random is in the 18 to 20 years old age range. ages frequency 18 to 20 5.9 21 to 24 7.7 25 to 34 20.4 35 to 44 25.1 45 to 64 54.4 65 and over 27.7 the probability that a voter chosen at random is in the 18 to 20 years old age range is nothing. (round to three decimal places as needed.)

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