Statistics
Problem Set 6
Cichello: SP 13
Problem Set 6
Due: 5:00 pm, Saturday, March 23rd
The graded portion of this homework is found on MyStatLab . Answers to any questions
submitted after 5:00 pm on Saturday, March 23 will be given half credit.
Please
Statistics
Problem Set 3- SOLUTIONS
Cichello: SP 13
SOLUTIONS
Problem Set 3
The graded portion of this homework is found on MyStatLab . Below are solutions to the
problems that are not graded.
NFL Replacement Refs, pt. 2
Picking up where we left off on la
Statistics
Problem Set 6- SOLUTIONS
Cichello: SP 13
SOLUTIONS
Problem Set 6
Chs. 7.1-7.4 and 9.1-9.4: Estimation, Confidence Intervals and Hypothesis Testing
1)
a. Explain the difference between an estimate and an estimator.
An estimator is the recipe (or
Stats
pre-class handout: Hyp. Testing/Conf. int. for Sample Variance
Cichello
In Chapter 6.4, we learned about the sampling distribution of the Sample Variance. We learned:
1) E[s2] = 2
i.e. The sample variance is an unbiased estimator of the population v
We previously recognized that when we pick a different random sample, we will often find a
different sample mean. We started learning about the distribution of all the possible sample
means- what the expected value was, the variance, and when it might be
Statistics
Problem Set 5- SOLUTIONS
Cichello: SP 13
SOLUTIONS
Problem Set 5
Ch. 6: Sampling and Sampling Distributions
1) Sample Means
Suppose we randomly pick a sample of 4 Americans (out of the population of 300,000,000).
Let H represent the height of e
Statistics
Problem Set 4- SOLUTIONS
Cichello: SP 13
SOLUTIONS
Problem Set 4
Ch. 5: Continuous Random Variables
1) Uniform Distribution
a. If a random variable, X, has a uniform distribution over the values 10 to 15, what
does f(x) equal? Draw the diagram.
Statistics
Problem Set 2: SOLUTIONS
Cichello: SP 13
SOLUTIONS
Problem Set 2
The graded portion of this homework is found on MyStatLab . Below are solutions to the
problems that are not graded.
Ch. 3: Probability
National Football League
Suppose the NFL is
Statistics
Problem Set 1- SOLUTIONS
Cichello: SP 13
SOLUTIONS
Problem Set 1
Question 1:
Suppose you have 90 people in your sample and you ask them how many sodas they drank
yesterday. Ten say three sodas. Fifteen say two sodas. Twenty say they had one sod
Hypothesis Testing:
Test of the Population Mean with a Known Variance
General Strategy of Hypothesis Testing
Hypothesis testing starts with a hypothesis, or claim, about where a population parameter is
located. In this handout we will focus on the mean of