Countries that add fluoride to water have higher cancer rates than countries that do not. The conclusion that fluoride causes ca
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Answer:
The margin of error for a 90% confidence interval is 0.075.
Step-by-step explanation:
We are given that he asks listeners to phone in and vote "yes" if they agree the drinking age should be lowered and "no" if not.
Of the 100 people who phoned in, 70 answered "yes."
Let = sample proportion of people who say yes
So, =
= 0.70
where, X = Number of people who say yes = 70
n = Number of people phoned in = 100
<u>Now, Margin of error formula for any confidence interval is given by;</u>
Margin of error =
where, = level of significance = 10%
Standard of error =
Also, the critical value of x at 5% () level of significance is 1.645.
SO,<em><u> Margin of Error</u></em> =
=
= 0.075
Hence, the margin of error for a 90% confidence interval is 0.075.
Answer:
The answer to the inequality would be x > 6.
Step-by-step explanation:
Graph is linked down below.
Hope this helps! :D
