Answer:
1/3
Step-by-step explanation:
The number of boys who bought 10 to 20 lunches is 20.
The total number of students is 60.
So the probability is 20/60 = 1/3.
The temperature in Tampa Fonda is 15 degrees warmer than twice the temperature in Chicago, Illinois. The temperature in Tampa is
2 answers:
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Answer:
Step-by-step explanation:
The product of a binomial and a trinomial is
we have to simplify that
bringing the like terms together we get
hence our expression becomes
Answer:
We conclude that the games in Denver would be longer than major league baseball games.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 180 minutes
Sample mean, = 185.54 minutes
Sample size, n = 81
Alpha, α = 0.05
Sample standard deviation, s = 24.6 minutes
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 reject it.
We accept the alternate hypothesis.
We conclude that the games in Denver would be longer than major league baseball games.