MATH 110

MATH 110 TEST 3- PORTAGE LEARNING Suppose A and B are two events with probabilities: P(Ac )=.70,P(B)=.65,P(A∪B)=.80. Find the following: a) P(A∩B). For P(A∩B). Use P(A∪B)=P(A)+P(B)-P(A∩B) and rearrange to P(A∩B)=P(A)+P(B)-P(A∪B). But for this equation, we need P(A) which we can find by using P(A)=1-P(Ac ). So, P(A)=1-.70= .30. P(A∩B)=.30+.65-.80=.15.

MATH 110 TEST 3- PORTAGE LEARNING Suppose A and B are two events with probabilities: P(Ac )=.70,P(B)=.65,P(A∪B)=.80. Find the following: a) P(A∩B). For P(A∩B). Use P(A∪B)=P(A)+P(B)-P(A∩B) and rearrange to P(A∩B)=P(A)+P(B)-P(A∪B). But for this equation, we need P(A) which we can find by using P(A)=1-P(Ac ). So, P(A)=1-.70= .30. P(A∩B)=.30+.65-.80=.15. b) P(A). P(A) was found above as .30. c) P(Bc).

MATH 110 MODULE 7 EXAM. | PORTAGE LEARNING Module 7 Exam Exam Page 1 a) Define the null and alternative hypothesis for the following. Also, explain what it would mean to make a Type I error and explain what it would mean to make a Type II error. The newspaper in a certain city had a circulation of 19,000 per day in 2010. You believe that the newspaper’s circulation is different than 19,000 today. Ho: u = 19000 H1: u ≠ 19000

MATH 110 Module 2 Exam.| PORTGE LEARNING Module 2 Exam Exam Page 1 During an hour at a fast food restaurant, the following types of sandwiches are ordered: Cheeseburger Fish Cheeseburger Hamburger Fish Chicken Hamburger Cheeseburger Fish Hamburger Turkey Fish Chicken Chicken Fish Turkey Fish Hamburger Fish Cheeseburger Fish Cheeseburger Hamburger Fish Fish Cheeseburger Hamburger Fish Turkey Turkey Chicken Fish Chicken Cheeseburger Fish Turkey Fish Fish Hamburger Fish Fish Tur...

MATH 110 MODULE 6 EXAM.| PORTAGE LEARNING Exam Page 1 A new drug is introduced that is supposed to reduce fevers. Tests are done with the drug. The drug is given to 60 people who have fevers. It is found that the mean time that it takes for the fever to get back to normal for this test group is 350 minutes with a standard deviation of 90 minutes. Find the 80% confidence interval for the mean time that the drug will take to reduce all fevers for all people. Case 1: large pop and large sample...

MATH 110 COMBINATION OF EXAM ANSWERS. Exam 1 Exam Page 1 Define each of the following: a) Element. An element is described as "the individual and unique entry in a data set about which data has been collected, analyzed and presented in a same manner to differentiate" (Module 1). b) Variable. A variable is defined as a "particular measurable attribute that the researcher believes is needed to describe the element in their study" (Module 1). c) Data. Data (or the plu...

MATH 110 Statistics Exam Opener Answers

MATH 110 Module 9 Exam (GRADED A+) Questions and Answers- Portage Learning M9: Exam- Requires Respondus LockDown Browser • Due No due date • Points 35 • Questions 4 • Time Limit 90 Minutes • Requires Respondus LockDown Browser This quiz is currently locked. Attempt History Attempt Time Score LATEST Attempt 1 83 minutes 32 out of 35 Score for this quiz: 32 out of 35 Submitted Jul 27 at 5:50pm This attempt took 83 minutes. Question 1 5 / 5 p...

MATH 110 Module 5 Exam.| PORTGE LEARNING Module 5 Exam

MATH 110 Module 4 Exam.| PORTGE LEARNING Module 4 Exam Exam Page 1 A factory has eight safety systems. During an emergency, the probability of any one of the safety systems failing is .08. What is the probability that six or more safety systems will fail during an emergency? f(x) = ( (n!) / (x!(n-x)!) ) x ( (p^x) x ((1-p)^n-x)) ) n = 8 x = 6, 7, 8 (number of failures) p = 0.08 6 failures: n = 8 x = 6 p = 0.8 n-x = 8-6 = 2 ( (8!) / (6!(2)!) ) x ( (0.08^6) x ((1-0.08)^2)) ) = 6.2...

MATH 110 – Module 1 (Book Exam) L Questions 1-18

MATH 110 Module 1 Exam.| PORTGE LEARNING Module 1 Exam 2. Explain statistical inference.

MATH 110 COMBINATION OF EXAM ANSWERS. Exam 1 Exam Page 1 Define each of the following: a) Element. An element is described as "the individual and unique entry in a data set about which data has been collected, analyzed and presented in a same manner to differentiate" (Module 1). b) Variable. A variable is defined as a "particular measurable attribute that the researcher believes is needed to describe the element in their study" (Module 1). c) Data. Data (or the plu...

MATH 110 TEST 3- PORTAGE LEARNING

MATH 110 MODULE 7 EXAM. | PORTAGE LEARNING Module 7 Exam

Module 2 Exam Exam Page 1 During an hour at a fast food restaurant, the following types of sandwiches are ordered: Cheeseburger Fish Cheeseburger Hamburger Fish Chicken Hamburger Cheeseburger Fish Hamburger Turkey Fish Chicken Chicken Fish Turkey Fish Hamburger Fish Cheeseburger Fish Cheeseburger Hamburger Fish Fish Cheeseburger Hamburger Fish Turkey Turkey Chicken Fish Chicken Cheeseburger Fish Turkey Fish Fish Hamburger Fish Fish Turkey Chicken Hamburger Fish Cheeseburger Ch...

MATH 110 Final Exam (GRADED A+) Questions and Answers- Portage Learning Final Exam Question 1 Not yet graded / 10 pts You may find the following files helpful throughout the exam: The following pie chart shows the percentages of total items sold in a month in a certain fast food restaurant. A total of 4700 fast food items were sold during the month. a.) How many were fish? b.) How many were french fries? Your Answer: a. fish 4700(0.28)=1316 b. French fries 4700(0.4)=1880 ...

MATH 110 Module 5 Exam.| PORTGE LEARNING Module 5 Exam

MATH 110 Module 4 Exam.| PORTGE LEARNING Module 4 Exam Exam Page 1 A factory has eight safety systems. During an emergency, the probability of any one of the safety systems failing is .08. What is the probability that six or more safety systems will fail during an emergency? f(x) = ( (n!) / (x!(n-x)!) ) x ( (p^x) x ((1-p)^n-x)) ) n = 8 x = 6, 7, 8 (number of failures) p = 0.08 6 failures: n = 8 x = 6 p = 0.8 n-x = 8-6 = 2 ( (8!) / (6!(2)!) ) x ( (0.08^6) x ((1-0.08)^2)) ) = 6.2...

MATH 110 – Module 1 (Book Exam) Questions 1-18 Updated