0.068 rounded to the nearest thousandth
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:
The answer could be 0 or 1 out of 4, because choosing a card at first and not putting it back, then picking a second card at random, it would likely be one in zero attempts to pick 3 again but otherwise that it could be 1 out of 4 because it could be possible picking 3 at the first try.
Let p = the number of pennies
let q = the number of quarters
p + q = 23
0.01p + 0.25q = 3.11