Cups are sold in packs and in boxes. There are 12 cups in each pack. There are 18 cups in each box.
2 answers:
Answer:
Step-by-step explanation:
Let p denotes the number of cups in pack and b denotes the number of cups in boxes.
Given: There are 12 cups in each pack.
There are 18 cups in each box .
Then the total number of cups in p packs will be :-
And the total number of cups in b boxes will be :-
Now, the an expression in terms of ‘p’ and ‘b’ , for the total number of cups Alison buys will be:-
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Answer:
We conclude that children in district are brighter, on average, than the general population.
Step-by-step explanation:
We are given the following data set:
105, 109, 115, 112, 124, 115, 103, 110, 125, 99
Formula:
where are data points,
is the mean and n is the number of observations.
Sum of squares of differences = 642.1
We are given the following in the question:
Population mean, μ = 106
Sample mean, = 111.7
Sample size, n = 10
Alpha, α = 0.05
Sample standard deviation, s = 8.44
First, we design the null and the alternate hypothesis
We use one-tailed(right) 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 children in district are brighter, on average, than the general population.