Answer:
The value is
Step-by-step explanation:
From the question we are told the confidence level is 95% , hence the level of significance is
=>
Generally from the normal distribution table the critical value of is
a = 42 and B = 50
6 x 5 = 30
6 x 7 = 42
B
7 x 10
5 x 10
(-1,-6)
-2m would be the answer