Answer:
y = 6!
Step-by-step explanation:
Since the slope is 0, we know automatically it's a horizontal, flat line. The said line would be on 6 of the y intercept, so he equation would be "y = 6".
I really hope this made sense and help you out! If you need further explanation, you can ask.
At 95% confidence interval, the z score is 1.96. Using the
formula:
Confidence Interval = x ± z s / sqrt (n)
where x is the average time served, s is standard deviation
and n is number of samples
Confidence interval = 7.5 ± (1.96 * 3) / sqrt (400)
Confidence interval = 7.5 ± 0.294
<span>Confidence interval = 7.206 to 7.794</span>