Rachel recorded the number of calls she made at work during the week:

Day Calls

Monday 18

Tuesday 14

Wednesday 24

Thursday 16

She expected to make 18 calls each day. To answer whether the number of calls follows a uniform distribution, a chi-square test for goodness of fit should be performed. (alpha = 0.10)

chi squared equals begin inline style sum from blank to blank of end style fraction numerator left parenthesis O minus E right parenthesis squared over denominator E end fraction

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

-1.52

-3.11

-4.61

-3.27