1) 
What is meant by a
5% margin of error?

2) 
Bob claims that his
apples are bigger than Martha's apples. The mean of Martha's apples is
27. If you perform a significance test, what would the null and alternative
hypothesis be?

3) 
A
consultant takes a random sample and gets a mean size of 28 for Bob's apples
based on a sample size of 16. If the standard deviation of Martha's apples
is 4, find the pvalue and answer the question are Bob's apples larger. 
4)

What is the best way
to establish a cause and effect relationship between two variables?

5) 
Given the equation:
yhat = 4x +10, if x is increased by 5 what is the change in y?

6) 
1,000,000 people
belong to Martha's Fitness Emporium. 600,000 are women and 400,000 men. 50%
of the women work out every week and 40% of the men. In a sample of 1000,
what number would be expected to work out every week?

7) 
If H_{o}:
μ = 50, H_{a} μ >50 and the mean of a sample were 52 with a z
score = 2 and a pvalue = 0.023 what would be the likely conclusion?

8) 
Martha wants to
determine what fraction of voters will vote for the purple party in the next
election. She wants a 95% confidence level with no more than a 2% margin of
error. What is the smallest number of individuals she should survey? 
9) 
Bob's
Tocorama has a deal. Every Monday customers can spin a wheel that gives them
a discount of up to $1.00 on their next purchase. The mean is $0.50
and standard deviation is $0.15. If a customer participates for 40 weeks,
what is the probability that he will have a savings greater than $21? 
10) 
10% of Juan's fruit
special cakes weigh less than 20 grams and 15% weigh more than 25 grams.
Find the mean and standard deviation. 



