Answer: 0.42
Step-by-step explanation:
Given: Mean : 
Standard deviation : 
Sample size : 
The formula to calculate z score is given by :-

For X=960

The p-value =
Hence, the probability that a single randomly selected value is at least 960 dollars = 0.42
Answer:
3.5 hours
Step-by-step explanation:
16.50*4=$66
123.75-66=57.75
57.75/16.5=3.5 hours
123.75-4x=h
x is pay
h is hours worked
One angle would be 57 degrees, one would be 103