Question

11. If the null hypothesis is rejected at a 05 significance level, it (a) must also be rejected at a.10 significance level. (b) might also be rejected at a .10 significance level. (c) must not be rejected at a.10 significance level. (d) none of the above lfte null hypothesis İs not rejected at a .05 significance level, it: (a) will also not be rejected at a.01 significance level. (b) might be rejected at a .01 significance level. (e) will be rejected at a 01 significance level. (d) none of the above 12. When comparing the variances of two normally distributed populations using independent random samples, the appropriate test statistic to use is the (a) Z statistic. (b) t statistic (c) F statistic (d) Chi-square statistic (e) none of the above 13. 14. A chi- quare goodnes of it test iscomsidered vali f the expected cell froquencies are (a) greater than zero (b) less than 5 (e) at least 10 (d) at mostI (e) at least If a hypothesis test leads to the rejection of the null hypothesis, then (a) a Type l error is always committed (b) a Type II error is always committed (c) a Type I error may have been committed (d) a Type II error may have been committed (e) none of the above answers are correct 15.

Answer 1

i) If the null hypothesis is ajeckd t a 0os signiticance level , it al) must a so be acjected at olo lexl of signifcon e 12) If the null is not ejected at oos slgniticenre leve) →C) Will be njected at a oo' signifiance level s nlho comparing the vañianre ot-too mu negmally it distibu trd populotion using independent eanclo m sample the appaopojate test statistic to use is the )CF- statistic ) A- chi squaae goodnes of fit is cansideæed valid if the expected cell f sequencies are d)-) gouttt than zero If the hy pothesis test leads to the ajection of the null hypothes tben