Question: Hello! Could you please answer with all the calculations & steps. 2. Researchers investigated how the shape of a bowl affect how much ice cream

Hello! Could you please answer with all the calculations & steps.

2. Researchers investigated how the shape of a bowl affect how much ice cream people tend to scoop when serving themselves. At an ice cream social people were randomly given either a large circular bowl or a large square bowl. Both bowls hold the same amount when filled to capacity. They were then invited to scoop as much ice cream as they liked.

a) Did the bowl shape change the selected portion size? Use a 5% level of significance and critical value(s). Here are the summaries
b) Use the same data to find the 95% confidence interval on the difference of means.
c) Based on the confidence interval can one conclude that the bowl shape changed the selected portion size?

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