A restaurant tried to increase business on Monday night, byfeaturing a special $1.00 dessert menu. The number of diners oneach of 11 Mondays recorded while the special menu was ineffect.
The data were
119 139 121 126 128 108 63 118 109 131 142
a. Find a 95% confidence interval the long-run number ofdiners.
b. Before the special menu, the restaurant average 105.2 dinersper Monday night. Is it t reasonable to interpret the confidenceinterval from part “a†as indicating that the special menu did notincrease the average number of diners?
