21 = 3(3n - 5)
21 = 3(3n) - 3(5)
21 = 9n - 15
<u>+15 +15</u>
<u>36 </u>= <u>9n</u>
9 9
4 = n
Wdym by animal testing? Like doing experiments on rats as an example?
Answer: $20.
Step-by-step explanation: The price of onions was $32 per kg, this price decreased by $12, so you need to subtract 12 from 32. 32 - 12 is $20.
Answer:
The confidence level of the study is 99.9%
The confidence level is 99.9% of the margin error is 8%
Step-by-step explanation:
<u>Explanation</u>:-
Candy has observed 250 sports cars
The sample size 'n' = 250
Sample proportion 'p' = 15% = 0.15
The margin of error = 8% = 0.08
<em>The margin of error is determined by </em><em> = </em><em />
<em> </em><em />
<u>Conclusion</u>:-
The z- score of 99.9% level of significance = 3.54 for two tailed test
<em>Hence the confidence level is 99.9% of the margin error is 8%.</em>
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