Answer:
he needs 12.50 left
Step-by-step explanation:$62.50-$50
Answer:
--- test statistic
--- p value
Conclusion: Fail to reject the null hypothesis.
Step-by-step explanation:
Given


--- Null hypothesis
---- Alternate hypothesis

Solving (a): The test statistic
This is calculated as:

So, we have:






Solving (b): The p value
This is calculated as:

So, we have:

Look up the z probability in the z score table. So, the expression becomes


Solving (c): With
, what is the conclusion based on the p value
We have:

In (b), we have:

By comparison:

i.e.

So, we fail to reject the null hypothesis.
Answer:
1/10
Step-by-step explanation:
There's 10 marbles that you can pick, and there's only one marble with a 3 on it. So it'd be 1/10