Q16. The chi-square statistic formula for performing a hypothesis test for one population standard deviation is given by. A. ?2=s2?2/(n-1) B. ?2=s2?2/

Q16. The chi-square statistic formula for performing a hypothesis test for one population standard deviation is given by. A. ?2=s2?2/(n-1) B. ?2=s2?2/n C. ?2=s2?2/(n-1)1/2 D. ?2=s2(n-1)/ ?2 E. ?2=s2(n-1)1/2/ ?2Use the following data to answer Q17-Q20. Consider the radii (in millimeters) of twelve (12) randomly selected bolts manufactured by a certain Company as follows. 9.95 9.99 10.00 10.08 10.07 10.03 9.98 10.10 10.05 10. 00 10.02 9.97Q17. Calculate the sample standard deviation. A. s=0.045 B. s=0.075 C. s=0.054 D. s=0.047 E. s=0.034Q18. Determine a 95% confidence interval for the standard deviation ? of all 10-mm bolts produced by the manufacturer. A. (0.035, 0.085) B.(0.033, 0.080) C.(0.025,0.08) D.(0.033,0.087) E.(0.036,0.095)Q19. Determine a 90% confidence interval for the standard deviation ? of all 10-mm bolts produced by the manufacturer. A. (0.035, 0.085) B.(0.035, 0.073) C.(0.026,0.07) D.(0.033,0.085) E.(0.037,0.095)Q20. Every F- distribution is identified by A. Its number of degrees of freedom. B. Its number of parameters. C. Its number of two degrees of freedoms. D. Its number of descriptive statistics parameters. E. Its number of inferential statistics parameters.