Question

Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test a null hypothesis. Round to two decimal places. α = 0.07; alternate hypothesis H 1 is μ ≠ 3.24 ± __________

Answer 1

Assuming the data is from normal distribution, to test ag. , we reject the test at level if,

or, .

Here, is mean of the data, is number of observations, is population variance. is value of z at level . Here is 1.8119.

(Since nothing about written here, I am assuming it 1.)

Now, number of observations are greater than 50. So, The critical values are width or smaller.