The answer to the question above is D. (5.7, 31.3)
Answer:
a) Null hypothesis:
Alternative hypothesis:
b)
The degrees of freedom are given by:
![df = n-1 = 80-1=79](https://tex.z-dn.net/?f=%20df%20%3D%20n-1%20%3D%2080-1%3D79)
The p value for this case taking in count the alternative hypothesis would be:
Step-by-step explanation:
Information given
represent the sample mean for the amount spent each shopper
represent the sample standard deviation
sample size
represent the value to verify
t would represent the statistic
represent the p value f
Part a
We want to verify if the shoppers participating in the loyalty program spent more on average than typical shoppers, the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
The statistic for this case would be given by:
(1)
Replacing the info given we got:
The degrees of freedom are given by:
![df = n-1 = 80-1=79](https://tex.z-dn.net/?f=%20df%20%3D%20n-1%20%3D%2080-1%3D79)
The p value for this case taking in count the alternative hypothesis would be:
30-60-90 triangle are set up as the shorter side being x. The longer side is x times √3. The hypotenuse is 2 times x.
So if your short side is 6, we do 6 times √3. This becomes 6√3, the first option.
Answer:
3h+4.50=15
We know that she skates for 3 hours, but we don't know the cost per hour so is the "h". He pays a start up $4.50 for the ice skates. And he spend $15 in total for ice skating.
Hopefully that helps. Have a great night! Or day!
The correct question is
<span>Keiko sold 3 less than three-fourths of his sister’s sales. Which expression represents what Keiko sold?
Let
S----------------> </span><span>the amount that Keiko's Sister sold
</span>K----------------> the amount that Keiko sold
we know that
Keiko sold 3 less than three-fourths of his sister’s sales
K=(3/4)*S-3
the answer is
K=(3/4)*S-3