Answer:
d
Step-by-step explanation:
The information above is shown in the normal distribution curve shown below
Step 1 : Find the z-score for 5 hours

rounded to 2 dp
Step 2: Read the value of z-score on the z-table
As shown in the second picture, the value z at -1.18 is 0.1190
Step 3: The proportion can be written in percentage form which is 11.90% rounded to 12% to nearest whole number
Answer:
0.23
Step-by-step explanation:
Since 23 hundredths is 23 over one hundred, 23 hundredths as a Fraction is 23/100. If you divide 23 by one hundred you get 23 hundredths as a decimal which is 0.23. To get 23 hundredths as a Percent, you multiply the decimal with 100 to get the answer of 23 percent.