The manager of the city pool has scheduled extra lifeguards to be on staff for Saturdays. However, he suspects that Fridays may be more popular than the other weekdays as well. If so, he will hire...


The manager of the city pool has scheduled extra lifeguards to be on staff for Saturdays. However, he suspects that Fridays may be more popular than the other weekdays as well. If so, he will hire extra lifeguards for Fridays, too. In order to test his theory that the daily number of swimmers varies on weekdays, he records the number of swimmers each day for the first week of summer. Test the manager’s theory at the 0.025 level of significance.


Swimmers at the City Pool
Monday Tuesday Wednesday Thursday Friday
Number: 43   67       65               43                   70


Step 2 of 4 :

Calculate the expected value for the number of swimmers on Tuesday. Enter your answer as a fraction or a decimal rounded to three decimal places.

Step 3 of 4: Compute the test statistic. Round any intermediate calculations to six decimals and round the final answer to three decimal places.

Step 4 of 4: Draw a conclusion and interpret the decision. (Reject or fail to reject, Is there enough evidence or not?)


Jun 01, 2022
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