Cindy recorded the number of customers who visited her new shop during the week: Day Customers Wednesday 18 Thursday 20 Friday 25 Saturday 17 She expected to have 20 customers each day. To determine whether the number of customers follows a uniform distribution, a chi-square test for goodness of fit should be performed (alpha = 0.10). chi squared equals sum from blank to blank of fraction numerator left parenthesis O minus E right parenthesis squared over denominator E end fraction Using the data above, what is the chi-square test statistic? Answer choices are rounded to the hundredths place. a) 3.51
b) 0.55
c) 0.37
d) 1.9