Question

Where the population standard deviation is known, the test statistic is determined to be -2.5. What is the p-value for this test?

Answer 1

`P(Z<-2.5) =0.0062097`

Explanation:

From the question we are told that:

Test statistic t =-2.5

Generally the equation for Test for statistics is mathematically given by

`t=(\=x-\mu)/((s)/(√(n) ) )`

`t=-2.5`

Therefore

P-value from Z table is

For left tailed test

`P(Z<-2.5) =0.0062097`

therefore the P-value for the test is

`P(Z<-2.5) =0.0062097`