Answer:
22.97
Step-by-step explanation:
Given that the average cost of an IRS Form 1040 tax filing at Thetis Tax Service is $138.00.
Let x be the average cost an IRS Form 1040 tax filing at Thetis Tax Service
is given
From std normal distribution table we find 77th percentile z value.
z=0.74
Corresponding X value = 155
i.e.
where s is the std deviation
Simplify to get
Std deviation = 
The distribution will be skewed to the positive side because the mean is greater than the median.
Mean: 3.7
Median: 3
Answer: B
The answer is A) because the parabola is less than 3 (open circle) and the line is greater than and equal to 3 (closed circle)
Answer:
I think the answer is 12,0000