Question

What is the main objective of the statistic?

select one:

a) Make an inference about a population based on the information
contained in the sample

b) establish without a doubt, a conclusion about some
phenomenon

c) make an inference about the sample based on the information
contained in the population

d) make inferences about a sample with a high degree of
reliability.

Answer #1

Parameter : It is numerical aspects that shows characteristic of an entire population

Statistic: It is numerical aspects that shows characteristic of part of population or sample.

Inference: When we don’t know about population and we cannot study entire population, we collect some samples and make comment on population based on our sample.

**The main objective of the statistic is make an inference
about a population based on the information contained in the sample
.**

**Option a) is correct answer.**

16. When gathering data, presenting an attribute, or response
category, for every possible response is a requirement known as
______.
a. mutually exclusive b. exhaustiveness
c. reliability
d. validity
17. An example of nominal data is ______. a. age
b. level of satisfaction
c. university level
d. marital status
Chapter 5
18. Conclusions drawn about a population based on evidence and
reasoning derived from a sample are called ______.
a. fallacies
b. inferences
c. bias
d. generalizability
19. A numeric...

This project is related to statistical inference about the
difference between two population parameters and the analysis of
variance. You need to formulate hypotheses testing and confidence
estimation as you learned in class. Each group must collect data
related to the topic of their choice. You should specify your
parameter of interest and the claim, make the hypotheses, perform
test calculations and estimation, and make a conclusion.
specify your parameter of interest and the claim, make the
hypotheses, perform test...

Which statement is NOT true? Select one: a. Statistics uses
probability to collect data from a sample. b. Inferential
statistics refers to drawing a conclusion about a population based
on a sample. c. Statistics is a way to collect, organize, analyze,
present and interpret data. d. Descriptive statistics refers to
methods for summarizing and organizing information in a data
set.

1-A runs plot is a graphical technique for displaying data
collected over different time periods.
Select one:
a. False
b. True
2 - ________________ is the science of using a sample to make
generalizations about the important aspects of a population.
Select one:
a. Statistical Process Control
b. Random Sample
c. Statistical Inference
d. Descriptive Statistics
3- The two types of quantitative variables are:
Select one:
a. interval and ordinal.
b. ordinal and ratio.
c. nominative and ordinal.
4- Time...

A marketing director would like know now if the companies
customers learn about product improvements through print media
(i.e. newspapers/magazines) or through television media.
Historically, the percentage of customers who learn about
improvements through print media is 30%. The marketing director
believes this number has changed. They are not sure whether it's
larger or smaller than 30%, but rather that it has changed. To test
if the number has changed, they randomly sample 100 of their
customers and 36 of...

Which of the following is NOT a step in hypothesis testing?
Select one: a. Find the confidence interval. b. Use the level of
significance and the critical value approach to determine the
critical value of the test statistic c. Formulate the null and
alternative hypotheses d. Use the rejection rule to solve for the
value of the sample mean corresponding to the critical value of the
test statistic. When population standard deviation (σ) is unknown,
we use sample standard deviation...

Sample Statistic
Value of sample statistic
Sample mean () Body Mass Index (BMI)
21.65
Sample standard deviation (s) of Body Mass Index (BMI)
4.33
Sample size
92
(13 points) You will use information about the body
mass index (BMI) variable for the sample of adolescent girls to
perform a hypothesis test. You will test the claim that the mean
BMI for all adolescent girls is 21.0.
The null hypothesis is H0 : µ = 21.0. State the
alternate hypothesis for...

What is NOT true about traditional financial reporting?
Select one:
a. Traditional financial reporting enables organisations to
consider their impacts on wide range of sustainability issues.
b. Traditional financial statements do not show the actions and
commitments of a company in relation to its employees, customers,
shareholders and society.
c. Traditional financial statements show its economic situation
and are the main source of information that the interested parties
rely on about the company’s economic performance.
d. Traditional financial statements forgot...

no explanation required:
Question 24
A researcher obtains a test statistic of z = –2.04 for
a one-sample z-test. What is the decision for this test at a .05
level of significance?
Select one:
a. Reject the null hypothesis
b. There is not enough information to make a
decision.
c. Fail to reject the null hypothesis
Q 25
Question 25
A key difference between a t-statistic and a
z-statistic is that the standard error is ______ to compute a
t-statistic....

After reviewing data from a sample, an inference can be made
about the population. For example, Find a data set on the internet.
Some suggested search terms: Free Data Sets, Medical Data Sets,
Education Data Sets. Based on the trends and the history of your
data set, make a claim. What kind of test (left, right, two tailed)
would you have to complete? Show work
Find a data set on the internet. Some suggested search terms:
Free Data Sets, Medical...

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