The Institute of Education Sciences measures the high school dropout rate as the percentage of 21-through 29-year-olds who are not enrolled in school and have not earned a high school credential. Last year, the high school dropout rate was 7.1%. A polling company recently took a survey of 3,000 people between the ages of 21 and 29 and found that 5.5% of them are high school dropouts. The polling company would like to determine whether the dropout rate has decreased. Calculate the value of the test statistic.

11

step-by-step explanation:

32.50-7.50=25

225/25=11

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.