association wishes to find out whether their welders earn more or less than $51,350 annually. A sample of100 welders is taken and the mean annual income ofthe 9 The mean annual incomes of certied welders are normally distributed with the mean of $51,350 and a population standard deviation of $2,000. The ship building sample is $51,680. If the level of significance is 0.05, what conclusion should be drawn? points Multiple Choice eBook O Reject the null hypothesis as the test statistic is greater than the critical value oft. Do not reject the null hypothesis as the test statistic is less than the critical value of z. Q Do not reject the null hypothesis as the test statistic is less than the critical value of t. Reject the null hypothesis as the test statistic is greater than the critical value of z