Examlex
The mean gross annual incomes of certified tack welders are normally distributed with the mean of $50,000 and a standard deviation of $4,000. The ship building association wishes to find out whether their tack welders earn more or less than $50,000 annually. The alternate hypothesis is that the mean is not $50,000.
Which of the following is the alternate hypothesis?
Q1: A sample standard deviation is the best
Q10: i. We use the pooled estimate of
Q23: Based on the Nielsen ratings, the local
Q25: i. The statistical technique used to test
Q43: How many degrees of freedom do we
Q49: i. If the null hypothesis states that
Q62: A sample of 100 production workers is
Q75: Given the following five points: (-2,0), (-1,0),
Q127: i. A z-score is the distance between
Q195: Test at the 0.01 level the statement