Department of Economics, University of North Dakota
Econ 210: Homework 2 Questions
Note: Please write your name and email address clearly at the top of your answer sheet.
Make sure that your h
Question 1 1 out of 1 points
Correct For a one-tailed test (upper tail) with a sample size of 900, the null hypothesis will be rejected at the .05 level of significance if the test statistic is
Q
Stats 1 Spring 2017
Multiple Choice
Identify the choice that best completes the statement or answers the question.
_ 1. In computing the pth percentile, if the index i is an integer the pth percentile
RV discrete (0,1,2,3) or continuous (0, 0.001, 0.002, , 1.000) all pts between 2 randomly selected points that could be the RV are also possible
values of the RV | The probability distribution is def
1. what does your explanation reveal about the problem and solution?
My explanation reveals the the problem is there and needs to be fixed. The education in india is
flawed and needs correcting so I d
8.2 normal distribution
03/01/2016
This is the most important continuous distribution
Many distributions can be approximated be a normal distribution
The normal distribution is the cornerstone distr
Department of Economics, University of North Dakota
Econ 210: Homework 2 Questions
Note: Please write your name and email address clearly at the top of your answer sheet.
Make sure that your hand writ
Taran Albright
Department of Economics, University of North Dakota
Econ 210: Homework 3
Note: Please write your name and email address clearly at the top of your answer
sheet. Make sure
Taran Albright
Department of Economics, University of North Dakota
Econ 210: Homework 3
Note: Please write your name and email address clearly at the top of your answer
sheet. Make sure that your hand
Probability
02/02/2016
6.2 Assigning probablilities to Events
Random Experiment
o a random experiment is a process or course of action, whose
outcome is uncertain
o Example:
Flip a coin
Record a st
Economics 210
Examination 2 Formula Sheet
Frequency of the class
n
Relative Frequency =
Approximate class width =
Largest data value Smallest data value
Number of classes
P
xi
n
x
=
P
xi
N
=
IQR = Q3
Question 1 0.5 out of 0.5 points
Correct A regression analysis between demand (y in units of our good) and price (x in dollars) resulted in the following equation.
y = 9000 3000x
The equation ab
Question 1 0 out of 0.5 points
Incorrect The population variance can never be
Question 1 answers
Selected Answer: Incorrect All of these are correct.
Correct Answer: Correct negative.
Question
Question 1 1 out of 1 points
Correct A(n) _ is an unusually small or unusually large data value.
Question 1 answers
Selected Answer: Correct outlier
Correct Answer: Correct outlier
Question 2 t
Question 1 1 out of 1 points
Correct The set of all possible sample points (experimental outcomes) is called
Question 1 answers
Selected Answer: Correct the sample space.
Correct Answer: Correc
Question 1 0.5 out of 0.5 points
Correct The number of electrical outages in a city varies from day to day. Assume that the number of electrical outages (x) in the city has the following probabili
Question 1 0 out of 0.5 points
Incorrect For any continuous random variable, the probability that the random variable takes on exactly a specific value is
Question 1 answers
Selected Answer: Inco
Question 1 1 out of 1 points
Correct The following data were collected from a simple random sample from an infinite population.
13, 15, 14, 16, 12
The point estimate of the population mean
Qu
Question 1 1 out of 1 points
Correct When the level of confidence increases, the confidence interval
Question 1 answers
Selected Answer: Correct becomes wider.
Correct Answer: Correct becomes wi
Question 1 1 out of 1 points
Correct
A point estimate for the difference between the two sample means is
Question 1 answers
Selected Answer: Correct 1.
Correct Answer: Correct 1.
Feedback: Goo
Question 1 1 out of 1 points
Correct
The expected frequency of seniors is
Question 1 answers
Selected Answer: Correct 60.
Correct Answer: Correct 60.
Feedback: Good job. Keep it up, because t
Question 1 0.5 out of 0.5 points
Correct Facts and figures that are collected, analyzed, and summarized for presentation and interpretation are
Question 1 answers
Selected Answer: Correct data.
C