Answer:
yes
Step-by-step explanation:
Answer:
Compute alpha (α): α = 1 - (confidence level / 100)
Find the critical probability (p*): p* = 1 - α/2
To express the critical value as a z-score, find the z-score having a cumulative probability equal to the critical probability (p*).
Step-by-step explanation:
550-500 is not 500 it’s 50
Answer:
b) 1
Step-by-step explanation:


Answer:

Step-by-step explanation:
Before adding we require the fractions to have a common denominator
The lowest common denominator of 2, 5 and 3 is 30, thus
+
+ 
=
+
+ 
Add the numerators leaving the denominator
=
= 