The time to wait at the dentist's office is normally distributed with an average of 15 minutes and a standard deviation of 2.5 minutes. What is the percent of people that wait between 7.5 minutes to 22.5 minutes?

Group of answer choices

95%

99.7%

50%

68%

The spread of the Corona Virus (COVID-19) is 3.2% each day after the start of the year where 22,500 people had been infected. Which equation describes the spread of the virus?

Group of answer choices

y = 3.2x + 22,500

A = 22,500 (1 + .3.2)^t

A = 22,500 (1 + .032)^t

A = 22,500 (1 + 0.32)^t