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Steve, Teacher
Category: Homework
Satisfied Customers: 7392
Experience:  I teach Calculus and Probability in a University since 1994
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# Trial Outcomes Number of pairs with at least one extrovert 1 (3,

### Resolved Question:

Trial
Outcomes
Number of pairs with at least one extrovert
1
(3, 2) = (In, In) (2, 3) = (In, In) (6, 1) = (Ex, In) (2, 6) = (In, Ex) (8, 3) = (Am, In) (4, 1) = (Ex, In) (9, 4) = (Am, Ex) (9, 9) = (Am, Am)
4
2
(In, Am) (Am, Ex) (Am, Am) (Am, In) (Ex, Ex) (In, Am) (Ex, In) (Ex, Ex)
4
3
(Am, Ex) (In, Am) (In, Am) (Am, Am) (Ex, In) (Ex, Am) (Ex, In) (In, Ex)
5
4
(Ex, Ex) (Ex, Am) (In, In) (Am, Am) (Am, Am) (Am, Ex) (Am, Ex) (Ex, Ex)
5
a. Use the middle column from the table to estimate the average number of pairs in which both persons are extroverts.
b. Use the middle column from the table to estimate the average number of pairs in which neither person is an extrovert.

Q2. (3 points)
Suppose, on the average, one out of every eight houses will experience some sort of crime in a certain neighborhood. What would be a way to model the 1/8 chance using only a coin? (Refer back to how you used a coin in the original plastic bag example in Section 4.2.)

Q3. (2 points)
Recall Example 4.5 in Section 4.2, where researchers were choosing people for a psychological experiment. There we assumed that 1/3 of all people are extroverts. Once again, eight pairs are drawn for a total of 16 people, but this time researchers draw each pair from within a family (that is, two people from each of eight families). In this experiment, the researchers found that the average number of pairs in which both are extroverts is 2.2.
In Exercise 2 in Section 4.2 you estimated the number of pairs out of the eight in which both are extroverts, and your answer should have been less than 2.2. How can this difference be explained? What assumptions were we making when working with that example previously?

Q4. (2 points)
Over his career, a basketball player has scored on 1210 free throws and missed 214. What is his estimated probability of making a free throw?

Q5. (2 points)
A student thinks that statistical regularity means a guarantee that as the number of trials increases the relative frequency always gets closer to the theoretical probability. Examine Table 5.1 closely and agree or disagree with this claim.

Q6. (2 points)
Describe how you could use a random number table to model an event that has a probability of 1 in 1000 of occurring.

Q7. (5 points)
The probability of getting an A on your next test is 2/3; the probability of winning the door prize at the dance is 1/100; and the probability that your best friend will visit you next weekend is 1/5. What is the probability that all three events happen? What assumptions did you make? Do they seem reasonable?

Q8. (6 points)
A student has to match three terms that she has never seen before with their definitions. If she guesses, what is the probability of her
a. Getting all three correct?
b. Getting none correct?
c. Getting exactly one correct?
d. Getting exactly two correct?
What assumptions did you make? Do they seem reasonable?

If you need additional information referred to, let me know and I will send it to you. Thank you.
Submitted: 1 year ago.
Category: Homework
Expert:  Steve replied 1 year ago.
Hi,

When do you need the answers ??

Also I need some info

Steve
Customer: replied 1 year ago.

Hi Steve,

I need the answers by 9pm cst today. And I am attaching

Attachment: 2012-05-06_203103_chap04_sec2.pdf

section 4.2

Attachment: 2012-05-06_202952_chap04_sec2.pdf

Expert:  Steve replied 1 year ago.
Hi again,

I can do all of them but not Q5 and Q6 (i am not so good on "writing" questions)

Is that ok for you ?

Steve

Customer: replied 1 year ago.
yeah, that's fine!
Expert:  Steve replied 1 year ago.
Ok, and can you clarify which is the first column of the table ?? in question 1

Steve
Expert:  Steve replied 1 year ago.
Do not worry, i understand question 1 now

Steve
Customer: replied 1 year ago.

Steve,

I have absolutely no idea what they are referring to when mentioning column 1. I'm sorry, but I really must defer to you. Please do the best you can and I will attach some of the proceeding materials in the event that it will shed some light.

Best,

Dylan

ps. I also have some questions for next week once you have completed these. Thanks again!

Attachment: 2012-05-06_205055_chap04_sec1.pdf

Expert:  Steve replied 1 year ago.
Ok, i am working on the set now (questions 1,2,3,4,7 and 8)

I will post them shortly (less than 1 hour)

Steve
Customer: replied 1 year ago.
Great you are the best.
Expert:  Steve replied 1 year ago.
I couldn´t do Q3 but if you can upload table 5.1 maybe i can do Q5

let me know

Steve
Expert:  Steve replied 1 year ago.

Thanks

Steve
Steve, Teacher
Category: Homework
Satisfied Customers: 7392
Experience: I teach Calculus and Probability in a University since 1994
Customer: replied 1 year ago.
Steve was GREAT!!!!! But, there were a couple of questions he was unable to answer. Here they are:
Q5. (2 points)
A student thinks that statistical regularity means a guarantee that as the number of trials increases the relative frequency always gets closer to the theoretical probability. Examine Table 5.1 closely and agree or disagree with this claim.
Q6. (2 points)
Describe how you could use a random number table to model an event that has a probability of 1 in 1000 of occurring.
Expert:  Steve replied 1 year ago.
Hi,

If you upload table 5.1 maybe i can help with q 5)

Steve
Customer: replied 1 year ago.
Here is table 5.1

Attachment: 2012-05-06_220131_chap05_sec1.pdf

Expert:  Steve replied 1 year ago.
OK,

I am doing question 5)

I appreciate if you accept my work ( i didn´t do q3 and q6)

Steve
Customer: replied 1 year ago.
Great thank you very much. Can you send Q 3 and 6 to others. Thanks again!
Expert:  Steve replied 1 year ago.
You can view this answer by clicking here to Register or Login and paying \$3.
Steve, Teacher
Category: Homework
Satisfied Customers: 7392
Experience: I teach Calculus and Probability in a University since 1994

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