Unit 2 Assignment Answers by (Tiaira Nicole Walls)

In the summary tables below, insert only the answers. You will show work after the summary section.

Question 1 answers

|1a |.5641 |
|1b |.6636 |

Question 2 answers

|2a |.9913 |
|2b |.6855 |
|2c |.2008 |
|2d |.0559 |

Question 3 answers

|3a |.6217 |
|3b |.2817 |
|3c |.3011 |

Work

Show all your work for the three questions below.

Question 1

a) P(a/b)=.44/.78=0.5641

b) P(a)+p(b)-p(a&B)=.44+.78(0.5641)/.85=0.6636

Question 2

a) (z=x-m/d) z= 100-73/11.35= 27/11.35=2.38=.4913 (.4913+.5=.9913)

b) ) (z=x-m/d) z =60-73/11.35=-13/11.35=-1.15 (.3749)

(z=x-m/d) z =83-73/11.35=10/11.35= 0.88 (.3106)

(.3106+.3749=.6855)

c) (z=x-m/d) z =80-73/11.35=7/11.35=0.62 (.2324)

(z=x-m/d) z =90-73/11.35=17/11.35= 1.50 (.4332)

(.4332-.2324=.2008)

d) (z=x-m/d) z=55-73/11.35= -18/11.35=1.59 (.4441) (.5-.4441=.0559)

Question 3

a) P=x/n (P=237.50/950=0.25) Z=P=p^/p*q/n

a. (0.25-0.19)^/(.19)(.81)/950=0.06/0.190853=0.31=.1217 (0.5+.1217=.6217)

b) P=x/n (P=142.80/950=0.15) Z=P=p^/p*q/n

a. (0.15-0.19)^/(.19)(.85)/950=-0.04/0.190853=0.21=.0832

P=x/n (P=190/950=0.20) Z=P=p^/p*q/n

B. (0.20-0.19)^/(.19)(.80)/950=0.01/0.190853=0.52=.1985

(.0832+.1985=.2817)

c) P=x/n (P=133/950=0.14) Z=P=p^/p*q/n

a. (0.14-0.19)^/(.19)(.86)/950=-0.05/0.190853=0.26=.

P=x/n (P=171/950=0.18) Z=P=p^/p*q/n

(0.18-0.19)^/(.19)(.82)/950=-0.01/0.190853=0.52=.1985 (0.=.6217)

(.1026+.1985=.3011)

Assignment evaluation

Your assignment is graded as follows. You will get partial credit if you got close with the correct methodology.

Correct answers are at the end. Due to the need to prevent solutions getting out and students copying others' work, we have to walk a fine line between giving away too much and giving away too little. So I am not able to provide solutions to everyone after the assignments. I'm sorry but we are limited in this respect. Take a look at the correct answers to see what you missed and if you want further clarification, I will be happy to communicate with you personally over email. We can probably address your questions better that way.

Note that the second column will only show the points lost, if any. If it's blank, you got the question right.

|GB513 Unit 2 Assignment |
|Content and analysis |Points Possible|Points Lost. |
|Probability that a randomly selected U.S. adult between 18 – 34 years of age thinks that |5 |2 |
|“Made in America” ads boost sales and uses social media online. (Question 1a) | | |
|Probability that a randomly selected U.S. adult between 18 – 34 years of age thinks that |5 |2 |
|“Made in America” ads boost sales given that the person does notuse social media online. | | |
|(Question 1b) | | |
|Probability that a randomly selected monthly cell phone bill is more than $100, using the |5 |1 |
|data provided for Question 2 (a) | | |
|Probability that a randomly selected monthly cell phone bill is between $60 - $83, using the |5 | |
|data provided for Question 2 (b) | | |
|Probability that a randomly selected monthly cell phone bill is between $80 - $90, using the |5 | |
|data provided for Question 2 (c) | | |
|Probability that a randomly selected monthly cell phone bill is no more than $55, using the |5 | |
|data provided for Question 2 (d) | | |
|Probability that more than 25% of the business travelers say that the reason for their most |5 |2 |
|recent business trip was an internal company visit, given the data provided for Question 3 | | |
|(a). | | |
|Probability that between 15% and 20% of the business travelers say that the reason for their |5 |2 |
|most recent business trip was an internal company visit, given the data provided for Question| | |
|3 (b). | | |
|Probability that between 133 and 171 of the business travelers say that the reason for their |5 |2 |
|most recent business trip was an internal company visit, given the data provided for Question| | |
|3 (c). | | |
|Unit 2 Assignment Template was used. |5 | |
|Total |50 |50 |

Question 1 answers

|1a |0.37 |
|1b |0.07 |

Question 2 answers

|2a |0.0087 |
|2b |0.6855 |
|2c |0.2008 |
|2d |0.0559 |

Question 3 answers

|3a |0.00003 |
|3b |0.7844 |
|3c |0.2148 |