A sample of restaurants in a city shows that the average cost of an appetizer is $6. 32 with a standard deviation of $0. 47. A brand new restaurant wants to get noticed by offering appetizers for a much lower price. To determine the lower price, should the formula use a z-value that is greater than or less than -1?

a.

Greater than -1

c.

Greater than 1

b.

Less than -1

d.

Either way, it doesn’t matter