Answer:
(96.91, 101.09)
Step-by-step explanation:
To calculate the interval, you require the Z value at 95% confidence interval. The Z value is 1.96. The formula to calculate the confidence interval:

Where X is the mean and s is the standard deviation and x the sample size:

The interval is (96.91, 101.09)
Answer:
b=49
Step-by-step explanation:
27+b=76
76-27= 49
b=49
Answer:
infinite solution
Step-by-step explanation:
because it is a linear equation.