Answer:
19:00
Step-by-step explanation:
because 12 would be 24 and minus 4 would be 20 witch means 8pm so it would 19 cause because 20 minus 1 equals 19
Answer:
The sample size is 
Step-by-step explanation:
The population proportion is 
The margin of error is 
From the question we are told the confidence level is 90% , hence the level of significance is
=>
Generally from the normal distribution table the critical value of
is
Generally the sample size is mathematically represented as
=>
=> 
Answer:
a = z/mb
Step-by-step explanation:
Given:

To solve for a, divide both sides by the variables mb to isolate a-term.

Simplify the expression and we finally have solved for a-term.

Therefore, the answer to this question is a = z/mb.
Please let me know if you have any questions regarding my answer or explanation!
Answer:
28
Step-by-step explanation:
Hope this helped.