Answer:
0.9817.
Step-by-step explanation:
We are going to assume that this data is distributed based on the normal distribution.
Mean (population)= μ= $190
Standard deviation= σ= $12
n= 50
Meaning of "sample mean falls within $4": Sample value is between $186 and $194.
Check image below to see the calculation process:
Note: These values for probabilities can also be found in tables provides by book authors. You may ask your teacher/tutor about the and they will probably know where to find them.
