Chi-Square Goodness-of-Fit

A representative sample of 40 customers at an ice cream shop were surveyed and asked if they prefer their ice cream to be served in a plastic bowl, a waffle bowl, or a cone. Each participant could only select their one most preferred option. In that sample, 16 preferred a plastic bowl, 10 preferred a waffle bowl, and 14 preferred a cone. Use Minitab Express to conduct a chi-square goodness-of-fit test to determine if there is evidence that the proportions of people in the population who would choose a plastic bowl, waffle bowl, or cone are not all equal. Use the five step hypothesis testing procedure outlined below. Remember to copy + paste all relevant Minitab Express output and to clearly identify your answer from the output.

Step 1: State hypotheses and check assumptions.

Step 2: Compute the test statistic.

Step 3:Determine the p-value.

Step 4:Decide to reject or fail to reject the null hypothesis.

Step 5:State a real world conclusion.