The manager of John’s supermarket received complaints from Cashiers at the supermarket that many customers who used the express check-out lane have
more than the stipulated number of items for the lane. The express check-out
lanes are limited to customers purchasing 10 or fewer items. A recently taken
random sample of 150 customers entering express lanes at this supermarket
found that 84 of them had more than 10 items.
a. What is the point estimate of the mean number of customers who enter
the express lanes with more than 10 items? (2 mark)
b. Construct a 99% confidence interval for the percentage of all customers
at this supermarket who enter express lanes with more than 10 items (6
marks)
c. What does the 99% confidence interval mean from part (b)? (2 marks)

Consider how health insurance affects the quantity of health care services performed. suppose that the typical medical procedure has a cost of $160, yet a person with health insurance pays only $40 out of pocket. her insurance company pays the remaining $120. (the insurance company recoups the $120 through premiums, but the premium a person pays does not depend on how many procedures that person chooses to undergo.) consider the following demand curve in the market for medical care. use the black point (plus symbol) to indicate the quantity of procedures demanded if each procedure has a price of $160. then use the grey point (star symbol) to indicate the quantity of procedures demanded if each procedure has a price of $40. q d at p=$160 q d at p=$40 0 10 20 30 40 50 60 70 80 90 100 200 180 160 140 120 100 80 60 40 20 0 price of medical procedures quantity of medical procedures demand if the cost of each procedure to society is truly $160, the quantity that maximizes total surplus is procedures. economists often blame the health insurance system for excessive use of medical care. given your analysis, the use of care might be viewed as excessive because consumers get procedures whose value is than the cost of producing them.

Double corporation acquired all of the common stock of simple company for

Stock market crashes happen when the value of most of the stocks in the stock market increase at the same time. question 10 options: true false