Question Details

[answered] 1. (8 points) Assume that you make random guesses for 5 tru


I need some help with the following attached quiz. Thank you for your time.


1. (8 points) Assume that you make random guesses for 5 true-or-false questions.

 

(a) (3 pts) What is the probability that you get all 5 answers correct? (Show work and

 

write the answer in simplest fraction form) (b) (3 pts) What is the probability of getting the correct answer in the 5 th question,

 

given that the first four answers are all wrong? (Show work and write the answer in

 

simplest fraction form) (c) (2 pts) If event A is ?Getting the correct answer in the 5 th question? and event B is

 

?The first four answers are all wrong?. Are event A and event B independent? Please

 

explain.

 

2. (4 points) A high school with 1000 students offers two foreign language courses :

 

French and Japanese. There are 200 students in the French class roster, and 80

 

students in the Japanese class roster. We also know that 30 students enroll in both

 

courses. Find the probability that a random selected student takes neither foreign

 

language course. (Show work and write the answer in simplest fraction form) 3. (6 points) Imagine you are in a game show. There are 4 prizes hidden on a game

 

board with 16 spaces. One prize is worth $4000, another is worth $1500, and two are

 

worth $1000. You have to pay $50 to the host if your choice is not correct. Let the

 

random variable x be the winning.

 

(a) (2 pts) Complete the following probability distribution. (Show the probability in

 

fraction format and explain your work)

 

x P(x)

 

1 -$50

 

$1,000

 

$1,500

 

$4,000 (b) (2 pts) What is your expected winning in this game? (Show work and round the

 

answer to two decimal places) (c) (2 pts) What is the standard deviation of the probability distribution? (Show work

 

and round the answer to two decimal places) 4. (6 points) Mimi just started her tennis class three weeks ago. On average, she is

 

able to return 15% of her opponent?s serves. If her opponent serves 10 times, answer

 

the following questions:

 

(a) (4 pts) What is the probability that she returns at least 2 of the 10 serves from her

 

opponent? (Show work and round the answer to 4 decimal places) (b) (2 pts) How many serves can she expect to return? (Hint : What is the expected

 

value?) (Show work and round the answer to 2 decimal places) 2 5. (8 points) If the IQ scores are normally distributed with a mean of 100 and a

 

standard deviation of 15.

 

(a) (3 pts) Find the probability that a randomly selected person has an IQ score

 

between 88 and 115. (Show work and round the answer to 4 decimal places) (b) (2 pts) If 100 people are randomly selected, what is the standard deviation of the

 

sample mean IQ score. (Show work and round the answer to 2 decimal places) (c) (3 pts) If 100 people are randomly selected, find the probability that their mean IQ

 

score is greater than 97. (Show work and round the answer to 4 decimal places) 3 6. (4 points) Men?s heights are normally distributed with mean 69.0 inches and

 

standard deviation 2.8 inches. Mimi is designing a plane with a height that allows

 

95% of the men to stand straight without bending in the plane. What is the minimum

 

height of the plane? (Show work and round the answer to 2 decimal places) 7. (4 points) There are 10 members in the UMUC Stats Club.

 

(a) (2 pts)The Club must select a president, a vice president and a treasurer for the

 

school year. How many different ways can the officers be selected? (Show work) (b) (2 pts) The Club is sending a delegate of 2 members to attend the 2015 Joint

 

Statistical Meeting in Seattle. How many different ways can the delegate be selected?

 

(Show work) 4

 


Solution details:
STATUS
Answered
QUALITY
Approved
ANSWER RATING

This question was answered on: Sep 18, 2020

PRICE: $15

Solution~0001001186.zip (25.37 KB)

Buy this answer for only: $15

This attachment is locked

We have a ready expert answer for this paper which you can use for in-depth understanding, research editing or paraphrasing. You can buy it or order for a fresh, original and plagiarism-free copy from our tutoring website www.aceyourhomework.com (Deadline assured. Flexible pricing. TurnItIn Report provided)

Pay using PayPal (No PayPal account Required) or your credit card . All your purchases are securely protected by .
SiteLock

About this Question

STATUS

Answered

QUALITY

Approved

DATE ANSWERED

Sep 18, 2020

EXPERT

Tutor

ANSWER RATING

GET INSTANT HELP/h4>

We have top-notch tutors who can do your essay/homework for you at a reasonable cost and then you can simply use that essay as a template to build your own arguments.

You can also use these solutions:

  • As a reference for in-depth understanding of the subject.
  • As a source of ideas / reasoning for your own research (if properly referenced)
  • For editing and paraphrasing (check your institution's definition of plagiarism and recommended paraphrase).
This we believe is a better way of understanding a problem and makes use of the efficiency of time of the student.

NEW ASSIGNMENT HELP?

Order New Solution. Quick Turnaround

Click on the button below in order to Order for a New, Original and High-Quality Essay Solutions. New orders are original solutions and precise to your writing instruction requirements. Place a New Order using the button below.

WE GUARANTEE, THAT YOUR PAPER WILL BE WRITTEN FROM SCRATCH AND WITHIN YOUR SET DEADLINE.

Order Now