Bank officials want to test the hypothesis that the bank receives an average of 10 cheque kick every day against allegations mean this number was too small. If the officer take one sample at random and decided to reject the null hypothesis if and only if the mean of the sample exceeds 12.5, what decisions need to be taken when he acquired a 11.2 x
if (a) λ = 11.5 (b) λ = 10?
λ is the mean of a population sample Poisson to check. Indicate
whether the decision was a wrong decision.
Answer:
Bank officials want to test the hypothesis that the bank receives an average of 10 cheque kick ev...
1) Identify the rejection point(s) for the test of the following hypothesis: H0: mean = 10, Ha: mean != 10 Conducted on a sample size of 15, on a normally distributed population with unknown population variance, and a desired Type1 error probability (alpha) of 0.05. Hint: use the appropriate statistical function in your spreadsheet to determine the rejection point. Z test with rejection points -1.64 and +1.64 Z test with rejection points -1.96 and +1.96 t-test with degrees of freedom=14,...
Suppose that Vera wants to test the hypothesis that women make less money than men doing the same job. According to the Bureau of Labor Statistics (BLS), the median weekly earnings for men in the sales and office occupation sector in 2015 was $704. Vera collected median weekly earnings data for women in 2015 from a random subset of 16 positions in the sales and office occupation sector. The following is the sample data. $566, $648, $767, $683, $604, $727,...
Suppose that Vera wants to test the hypothesis that women make less money than men doing the same job. According to the Bureau of Labor Statistics (BLS), the median weekly earnings for men in the sales and office occupation sector in 2015 was $704. Vera collected median weekly earnings data for women in 2015 from a random subset of 18 positions in the sales and office occupation sector. The following is the sample data. S627, 5617, S732, S735, $639, S569,...