Exam (elaborations)
STATISTICS 101 STUDY.COM 2024/2025 WITH ACCURATE ANSWERS
- Course
- Institution
STATISTICS 101 STUDY.COM 2024/2025 WITH ACCURATE ANSWERS
[Show more]
Content preview
STATISTICS 101 STUDY.COM 2024/2025WITH ACCURATE ANSWERS
,STATISTICS 101 STUDY.COM 2024/2025
WITH ACCURATE ANSWERS
Which of the following is FALSE regarding the binomial probability distribution?
a) It is a mathematical construct that is used to model the probability of observing r successes in n trials.
b) It is the most often used discrete probability distribution in statistics.
c) It is calculated based on a formula where p is the significance level for a single event and q is the
quantity of data present.
d) None of the answers are correct. - CORRECT ANSWERSc) It is calculated based on a formula where p is
the significance level for a single event and q is the quantity of data present.
A bag has 5 blue pens, 2 red pens, 2 green pens and 1 yellow pen. What is the probability of drawing 2
successive red pens?
1/5
1/45
1/90
2/15 - CORRECT ANSWERS1/45
You're rolling a 20-sided die where each side shows a number from 1-20. For which of the following is it
probable that the probability will be 1:4?
a) That you will roll a 2
b) That you will roll two consecutive odd numbers
c) That you will roll three consecutive odd numbers
d) That you will roll two dice and the result will be 4 - CORRECT ANSWERSb) That you will roll two
consecutive odd numbers
C is the result of the intersect of A and B. If C= {1,3,6}, which of the following are A and B?
a) A = {1,3,4,5,6} and B = {-1,-2,-3,-4}
b) A = {1,3} and B = {6}
,c) A = {1,3,7,8,10} and B = {1,3,6}
d) A = {1,2,3,6,8} and B = {0,1,3,6,9} - CORRECT ANSWERSd) A = {1,2,3,6,8} and B = {0,1,3,6,9}
You're drawing a card from a standard deck with 52 cards. For which of the following is your probability
of drawing this card 2:13?
a) It's the probability of drawing a king.
b) It's the probability of drawing a jack or a ten.
c) It's the probability of drawing a jack, ten or a queen.
d) It's the probability of drawing a jack, ten, a queen or a king. - CORRECT ANSWERSb) It's the probability
of drawing a jack or a ten.
On a 20-sided die, each side shows a number from 1-20. What is the probability that the sum of the
numbers shown will be 6 when rolling two?
a) 1/80
b) 1/6
c) 395/400
d) 1/400 - CORRECT ANSWERSa) 1/80
What is the value of alpha for a 90% confidence interval?
a) 0.01
b) 0.10
c) 0.05
d) 0.25 - CORRECT ANSWERSb) 0.10
Suppose that you take 160 simple random samples from a population and that, for each sample, you
obtain an 85% confidence interval for an unknown parameter. Approximately how many of those
confidence intervals will contain the value of the unknown parameter?
a) 136
b) 155
c) 100
, d) 128 - CORRECT ANSWERSa) 136
Suppose that you take 500 simple random samples from a population and that, for each sample, you
obtain a confidence interval for an unknown parameter. You expect 475 of the confidence intervals to
actually contain the value of the unknown parameter. What was the confidence interval you calculated?
a) 95%
b) 90%
c) 85%
d) 80% - CORRECT ANSWERSa) 95%
Which of the following uses a sample statistic?
a) Confidence interval
b) Parameter
c) Both of these are correct.
d) Neither of these is correct. - CORRECT ANSWERSc) Both of these are correct.
What is game theory?
a) A theory on how many hours teenagers spend on games
b) A theory on how gaming works
c) A field of math used to guide logical decision making
d) The expectation of what will happen in any given event - CORRECT ANSWERSc) A field of math used to
guide logical decision making
Joseph asks 20 people in his math class if they are comfortable with using technology. Seven out of the
20 say they are comfortable with using technology. Calculate the theoretical and the actual probability
of this scenario.
a) Theoretical: 50%
Actual: 35%
b) Theoretical: 70%
Actual: 50%
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller PRETTYGRADES81. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67163 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now