65.75 - 36.50 = 29.25
29.25 \ 6.50 = 4.5
Your answer is 4.5 hours
Answer:
There is enough evidence to support the claim the mean nicotine content is actually higher than advertised.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 1.5
Sample mean, = 1.53
Sample size, n = 100
Alpha, α = 0.05
Population standard deviation, σ = 0.17
First, we design the null and the alternate hypothesis
We use one-tailed z test to perform this hypothesis.
Formula:
Putting all the values, we have
Now, we calculate the p-value from the standard normal table.
P-value = 0.038807
Since the p-value is less than the significance level we fail to accept the null hypothesis and reject it. We accept the alternate hypothesis.
Conclusion:
Thus, there is enough evidence to support the claim the mean nicotine content is actually higher than advertised.
Answer:
don't know about this question
Answer:
(left to right top to bottom) -3/4, 4, 1/3, -2
Step-by-step explanation: