Times for a Table
Dominick Aldo owns and operates Carolina’s which is an Italian restaurant in New York. The Excel file Single Population.xlsx is shown below and contains the amount of time that table times varied from table to table. Test the hypothesis that the average table time exceeds 98 minutes using α = 0.05. What is the p-value? Interpret the results.
Time |
50 |
50 |
50 |
60 |
60 |
60 |
60 |
60 |
60 |
70 |
70 |
70 |
70 |
70 |
70 |
70 |
75 |
75 |
75 |
75 |
75 |
75 |
75 |
75 |
80 |
80 |
80 |
80 |
80 |
80 |
80 |
80 |
80 |
80 |
85 |
85 |
85 |
90 |
90 |
90 |
90 |
90 |
90 |
90 |
90 |
90 |
90 |
90 |
90 |
90 |
95 |
95 |
95 |
100 |
100 |
100 |
100 |
100 |
100 |
105 |
105 |
105 |
110 |
110 |
110 |
110 |
110 |
110 |
110 |
110 |
115 |
120 |
120 |
120 |
120 |
120 |
125 |
130 |
130 |
135 |
135 |
145 |
145 |
150 |
150 |
150 |
165 |
165 |
170 |
195 |
(Step 1) Identify the Null Hypothesis ad Alternative Hypothesis
(Step 2) Calculate the test statistic
(Step 3) Calculate the p-value and critical value
(Step 4) What is your conclusion about the Null Hypothesis?
(Step 5) What is your final conclusion about the Original Claim?
Solution:
Identify the Null Hypothesis ad Alternative Hypothesis
Calculate the test statistic.
The test statistic is:
Where:
The critical value is:
What is your conclusion about the Null Hypothesis?
Answer: Since the test statistic does not fall in the rejection region, we, therefore, fail to reject the null hypothesis.
What is your final conclusion about the Original Claim?
Answer: Since we fail to reject the null hypothesis, therefore, there is not sufficient evidence to support the claim that the average table time exceeds 98 minutes
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