Joe and two friends are going to a concert. The total cost is $186. If there is a $24 service fee, write and solve an equation t
2 answers:
Answer:
The cost of 1 ticket is $54.
Step-by-step explanation:
Joe and two friends are going to a concert.
The total cost is = $186(total cost includes service fee).
The service fee is = $24
Service fee of $24 will be applies to the sum of three tickets.
So we have the cost of three tickets as = dollars
Now we will divide this $162 in 3 parts as there are 3 friends.
This value is = dollars
Hence, the cost of 1 ticket is $54.
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Answer:
We conclude that the mean nicotine content is less than 31.7 milligrams for this brand of cigarette.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 31.7 milligrams
Sample mean, = 28.5 milligrams
Sample size, n = 9
Alpha, α = 0.05
Sample standard deviation, s = 2.8 milligrams
First, we design the null and the alternate hypothesis
We use One-tailed t test to perform this hypothesis.
Formula:
Putting all the values, we have
Now,
Since,
We fail to accept the null hypothesis and accept the alternate hypothesis. We conclude that the mean nicotine content is less than 31.7 milligrams for this brand of cigarette.