Can someone help me figure the answer out to this question , thank you .
1 answer:
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Answer:
The function that can be used in the online shopping club about its monthly revenue is:
Step-by-step explanation:
First, we're gonna take into account the different values we have in the exercise:
- 10,000 members
- $7 per month for membership
- Loses of 400 members by each $1 monthly increase
How the variable represents the price increase, we can do the formula below:
In this formula, we represent in the first part that by each 1 in the variable , the total of members will be reduced in 400, in the second part, we mention that at the same time, the membership fee will be increased in the same value of
. Now we must simplify this function:
We operate the values:
Solve we can:
And organize:
At the end, how represents the monthly revenue received by the club, we use that variable for our formula:
Complete Question
The complete question is shown on the first uploaded image
Answer:
the null hypothesis is
the alternative hypothesis is
The test statistics is
The p-value is
so
Step-by-step explanation:
From the question we are told that
The population mean is
The sample size is n= 38
The sample mean is
The standard deviation is
Generally the null hypothesis is
the alternative hypothesis is
Generally the test statistics is mathematically evaluated as
substituting values
The p-value is mathematically represented as
From the z- table
So
