Answer: -10, 10
Step-by-step explanation:
Answer:
22/35
Step-by-step explanation:
3/7 + 1/5
First, find a common denominator.
7*5=35 multiply the numerator by 5 too: 3*5=15
5*7=35 multiply the numerator by 7 too: 1*7=7
15/35 + 7/35
=22/35
Cannot be simplified.
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:
Step-by-step explanation:
BDC=95