Sufficient evidence that power expenditure for Question 15
The manufacturer of shoes wants to test whether a small price reduction is enough to increase sales
of their product. Randomly chosen data on 15 weekly sales totals at outlets in Arusha before the price
reduction show a sample mean of Tshs. 6,598,000 and a sample standard deviation of Tshs.844,000.
A random sample of 12 weekly sales totals after the small price reduction gives a sample mean of
Tshs. 6,870,000 and a sample standard deviation of Tshs.669,000. Is there statistical evidence that
the small price reduction is enough to increase sales of shoes?

Identify the combined shifts in long-run aggregate supply and aggregate demand that could unambiguously explain the simultaneous occurrences of an increase in equilibrium real gdp and increase in the equilibrium price level. a. long-run aggregate supply schedule (lras) shifts to the right and aggregate demand schedule (ad) shifts to the right by a larger amount. b. long- run aggregate supply schedule (lras) shifts to the left and aggregate demand schedule (ad) shifts to the right. c. long-run aggregate supply schedule (lras) shifts to the right and aggregate demand schedule (ad) shifts to the left. d. long- run aggregate supply schedule (lras) shifts to the left and aggregate demand schedule (ad) shifts to the left.