Read each problem carefully. Then, solve completely. Include your solution.

1. Jayrho commutes to school every day with an average travel time of 35 minutes with standard deviation of 5 minutes. If his travel time is normally distributed,

a. What percent that his travel time is less than 30 minutes?

b. If his class starts 7:30 AM and he left home at 7:10 AM, what is the probability that he will be late?

c. About how many times in a school year (200 school days) will she arrive at

school between 30 minutes and 45 minutes' travel time?

2. ABC saloon pays its employees an average of 60.00 per hour with standard deviation of P10.00. If the wages are approximately normally distributed,

a. What percent of employees receive a salary less than 50.00 per hour?

b. What percent of employees receive a salary of more than 80.00 per hour?

3. The average height of SHS male student is 160 cm with standard deviation of 3 cm. of their heights are normally distributed,

a. How many percent of SHS male student are shorter than 155 cm?

b. How many percent of SHS male student have a height higher than 167 cm?

c. If a SHS male student is to be randomly selected, what is the probability that his height is between 153cm to 165cm?