Flip the second fraction, and then multiply them. when you do that, simplify the total, and you got your answer
Absolute value only removes the negative signs. Just multiply the numerator and the denominator
I think you posted this question more than once..
Answer: 95% confidence interval would be (26.01,29.39).
Step-by-step explanation:
Since we have given that
n = 50
Mean = 27.7
Standard deviation = 6.12
We need to construct 95% confidence interval for the population.
so, z = 1.96
So, it becomes,

Hence, 95% confidence interval would be (26.01,29.39).
Muffy = 175 feet
Carlos = 100 feet
Dough = 125 feet
Shay = 50 feet
Hope I helped.