Answer:
The value is 
Step-by-step explanation:
From the question we are told that
The confidence level is C = 85%
Generally the level of significance is mathematically represented as


Now from the normal distribution table the critical value of
is

120.25 I just divided the figure into smaller shapes, found the value and then I added the areas together! :)
Answer:
17 centemeters
Step-by-step explanation: