Answer:
ayuda necesito lo mismo
Step-by-step explanation:
por favor algún voluntario
Answer:
We conclude that the actual average cost per workbook is higher than $27.50.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = $27.50
Sample mean, = $28.90
Sample size, n = 44
Alpha, α = 0.05
Population standard deviation, σ = $5.00
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,
Since,
We reject the null hypothesis and accept the alternate hypothesis.
Thus, we conclude that the actual average cost per workbook is higher than $27.50.
Answer:
- The men to women ratio is 3 : 4
- The ratio between women to total number of people is 4 : 7
Step-by-step explanation:
Men to women ratio = 21 : 28 or 3 : 4
The men to women ratio is 3 : 4
Total people = 21 + 28 = 49 people
The ratio of women to total number of people is
28 : 49 or 4 : 7
The ratio between women to total number of people is 4 : 7
Answer: 5
Step-by-step explanation:
The reason being that if you set a number to a power, thats how many times you multiply it my itself. So if it is one five, the the answer is five.
Is there a pic for the problem ?