The test statistic of zequalsnegative 3.43 is obtained when testing the claim that pless than0.39. a. Using a significance level of alphaequals0.05, find the critical value(s). b. Should we reject Upper H 0 or should we fail to reject Upper H 0?

a

b

 We should reject the Upper  

Step-by-step explanation:

From the question we are told that

   The test statistics is    

     The probability is  

      The level of significance is

Now looking at the probability we can deduce that this is a left tailed test

The  second step to take is to obtain the critical value of from the critical value table  

    The value  is  

Now  since this  test is  a  left tailed test  the critical value will be

This because we are considering the left tail of the normal distribution curve

 Now  since the test statistics falls within the  critical values the Null hypothesis is been rejected

hello i am doing good for you that it's summer in your country or state ; )

btw in my country we just have sun and rain as (because i live in the caribbean lol)

also, thx a lot for the points : )