Answer:
--16 1/14, -225/14 or -16.07
Step-by-step explanation:
3/4(2x+5)=5(x+12)
3x/2+15/4=5x+60
-225/14
Answer:
We see that the p value is lower than the significance level given of 0.01 so then we can conclude that the true mean for the nicotine content is significantly higher than 40 mg
Step-by-step explanation:
Information provided
represent the average nicotine content
represent the sample standard deviation
sample size
represent the value to check
represent the significance level for the hypothesis test.
t would represent the statistic
represent the p value for the test
System of hypothesis
We want to verify if the nicotine content of the cigarettes exceeds 40 mg , the system of hypothesis are:
Null hypothesis:
Alternative hypothesis:
The statistic for this case would be:
(1)
And replcing we got:
The degrees of freedom are:
The p value would be:
We see that the p value is lower than the significance level given of 0.01 so then we can conclude that the true mean for the nicotine content is significantly higher than 40 mg
[ Answer ]

[ Explanation ]
--------------------------
- 4 = 6
- 4 + 4 = 6 + 4
= 10
= 10 · 2
X = 20
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The prime factorization of 15 is 1 * 3 * 5