ANSWERED

check all of the temperatures that are within one standard deviation of the mean. 72°

-74

-79

how many years had temperatures that were exactly one standard deviation from the mean

-6

b

step-by-step explanation:

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%

mean, 40.6

step-by-step explanation: