Step-by-step explanation:
4x+28=5x+8
x=20
.............
I thinks it C, this a difficult question but idk, that my closest guess...
Answer:
The sample size is
Step-by-step explanation:
From the question we are told that
The margin of error is E =4.266
The standard deviation is 
From the question we are told the confidence level is 99% , 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
=>
=>