Question

Find the value of zα/2 to construct a confidence interval with level 95%. Round the answer to two decimal places.

Answer 1

Answer:

The value is   $Z_{\frac{\alpha }{2} } =  1.96$

Step-by-step explanation:

From the question we are told the confidence level is  95% , hence the level of significance is    

      $\alpha = (100 - 95 ) \%$

=>   $\alpha = 0.05$

Generally from the normal distribution table the critical value  of  $\frac{\alpha }{2}$ is  

   $Z_{\frac{\alpha }{2} } =  1.96$