Question 1 (2 points) Listen A random sample of n = 58 customers at a fast-food restaurant had a mean bill of - $9.63. I
Posted: Mon Nov 15, 2021 10:27 am
Question 1 (2 points) Listen A random sample of n = 58 customers at a fast-food restaurant had a mean bill of - $9.63. If the population standard deviation is a = $0.89. find the 91% confidence interval (including units) of the mean bill for all customers. Assume the variable is normally distributed and state the distribution used to find the interval. <p>Distribution used:</p> <p>Confidence interval:</p> 7 A