Does good smell bring good business? Businesses know that customers often respond to background music. Do they also respond to odors? Nicolas Gueguen and his colleagues studied this question in a small pizza restaurant in France on Saturday evenings in May. On one evening, a relaxing lavender odor was spread through the restaurant; on another evening, a stimulating lemon odor; a third evening served as a control, with no odor. The Table below shows the amounts (in Euros) that customers spent on the evenings with No odor and Lemon odor. No odor: 15.9 18.5 18.5 18.5 21.9 15.9 15.9 15.9 15.9 15.9 18.5 18.5 20.5 18.5 18.5 15.9 15.9 15.9 18.5 18.5 18.5 15.9 18.5 15.9 25.5 12.9 15.9

Lemon odor: 18.5 15.9 18.5 18.5 15.9 18.5 15.9 18.5 18.5 15.9 18.5 15.9 21.9 15.9 18.5 18.5 18.5 18.5 25.9 15.9 15.9 18.5 18.5 18.5 18.5

Summary of the above data

Totals	No Odor (N=27)	Lemon Odor (N=25)
X	475.1	452.5
X2	8,514.99	8,306.65

In order to find out what effect the Lemon odor has on customer spending, calculate the mean and the sample standard deviation for the No odor group. (Round your answers to the nearest hundredths <>.)

{Hint: It is highly recommended that you use the computational formula.}

1. For the group, No odor:

a. What is the mean?

b. What is the sample Standard deviation?

Summary of the above data

Totals	No Odor (N=27)	Lemon Odor (N=25)
X	475.1	452.5
X2	8,514.99	8,306.65

In order to find out what effect the Lemon odor has on customer spending, calculate the mean and the sample standard deviation for the Lemon odorgroup. (Round your answers to the nearest hundredths <>.)

{Hint: It is highly recommended that you use the computational formula.}

2. For the group, Lemon odor:

a. What is the mean?

b. What is the sample Standard deviation?

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3. Does the group with Lemon odor or No odor show more variability in customer spending? Explain why?

{Hint: Is the mean or the sample standard deviation a measure of variability?}

4.Which group shows more customer spending on average?

{Hint: Is the mean or the sample standard deviation a measure of central tendency (or average)?}

Group of answer choices

5. Interpret what the sample standard deviation is describing for the group with Limon Odor using words.

6.What is the 95% range of amounts (in Euros) that customers spent on each of these evenings with Lemon odor using the sample mean and sample standard deviation? (Round your answers to the nearest hundredths >.)

7.Calculate the estimated population standard deviationforall possible customer spending when Lemon odor was used in the restaurant? (Round the result to the hundredth <>.)