Question

1. the owners of a road - side ice cream stand want to know which flavor of soft - serve ice cream is most popular with their customers. they know, on average, they have about 2,500 customers each week during the summer. one summer week, the owners chose two days at random to record each sale (wednesday and friday). the results are shown in the table.

flavor	wednesday	friday
vanilla	50	190
mixed swirl	70	360
total	210	750

which set of data is likely to produce the most valid results?
a. the data from wednesday’s sample.
b. the data from friday’s sample.
c. the data from combining both the wednesday’s and friday’s samples.
d. any of the above will produce similar valid results.

Explanation:

To determine the most valid results, we consider the sample size. A larger sample size generally provides more accurate and representative data. The total sales on Friday (750) are much higher than on Wednesday (210). Combining both samples (210 + 750 = 960) gives a larger, more representative sample of the 2,500 weekly customers. Larger samples reduce sampling error and better reflect the population's preferences.

Answer:

C. The data from combining both the Wednesday’s and Friday’s samples.