A sample of 22 observations selected from a normally distributed population produced a sample variance of 18 . a. To see if the population variance differs from 14 write the null and alternative hypotheses. b. Using �=.05α=.05, find the critical values of �2χ2. Display the chi-square distribution curve's rejection and nonrejection areas. c. Determine the test statistic �2χ2 value.  d. Will you reject the null hypothesis presented in component an at a 5% significance level?​