Calculate the chi-square statistic for this sample

Plastic sheets produced by a mechine are periodically monilofed for possible fluctuations in thickness. If the true variance exceeds 2.15 square millimetera, there is cause for concern about product qually. Thickness measurements for a random samplo of 10 sheets produced in a particular shift were taken, giving the tesults shown beiow (in millimeters). 229230227230225230230228226225 a. Find the sample variance. b. Test, at the 5% significance level, the null hypothesis that the population variance is at most 2.15 square millmeters. Click the icon to viow the upper critical values of Chi-square distribution table. A. Roject H0 if 021p>n1,a/22 or reject H0 if 02ipxn1,a2 Determine the critical value or values. The criticat value(s) is(are) 16919 (Round to three decimal places as needed. Use a comma to separate answers as neoded) Calculste the chi-square statistic for this sample: 02(n1)s2=(Roundtothreedecimalplacesasneeded.)<1>