Step 1 :

The hourly wage of the babysitter is $ 12 per hour.

Mean wage of the babysitter is $ 14 per hour. \ \

Standard deviation is 1.9.

Calculate Z-score. \ \

z - Score formula is .

where is hourly wage of the babysitter,

is the mean and

is the standard deviation.

The Z-score is -1.05. \ \

Step 2 :

Find the probability that babysitter wage is greater than $ 12 per hour, .

From z - score table the probability is .

The probability that babysitter wage is greater than $ 12 per hour is 0.8531. \ \

Solution:

The Z-score is -1.05.

The probability that babysitter wage is greater than $ 12 per hour is 0.8531. \ \