Carl recorded the number of customers who visited his new store during the week:

DayCustomersMonday17Tuesday13Wednesday14Thursday16

He expected to have 15 customers each day. To answer whether the number of customers follows a uniform distribution, a chi-square test for goodness of fit should be performed. (alpha = 0.10)

What is the chi-squared test statistic?Answers are rounded to the nearest hundredth.

• 2.33
• 0.67
• 0.40
• 1.60