Math302 quiz 2 - Study guides, Class notes & Summaries

MATH302 Quiz 5 Latest Update | 2024/2025 | Graded A+ **1. When the confidence level increases while keeping everything else constant, what happens to the required sample size to achieve the same margin of error?** - Increases **Explanation:** - When the confidence level increases, the critical value ( Z ) increases (for Z-distribution) or ( t ) increases (for t-distribution). The formula for sample size ( n ) to achieve a margin of error ( E ) is: [ n = left( ...

math302 quiz 2 Part 1 of 6 - 5.0/ 5.0 Points Question 1 of 20 1.0/ 1.0 Points If a die is rolled one time, find the probability of getting a number greater than 2. A.2 B.-1 C.5/ 6 D.4/ 6 Answer Key: D Question 2 of 20 1.0/ 1.0 Points A jar contains four white marbles, five red marbles, and six black marbles. If a marble is selected at random, find the probability that it is white or bla...

MATH 302 QUIZ 5 – QUESTION AND ANSWERS – SET 2 | 100% VERIFIED Q&AS | AMERICAN PUBLIC UNIVERSITY (GRADED A+)

1. If A and B are any two events with P(A) = .8 and P(B|A) = .4, then the joint probability of A and B is 2. Sue has 10 pictures but only has space in her apartment to hang 4 of them on a wall. The number of different arrangements of four pictures from a selection of ten pictures is: 3. The probability of an event and the probability of its complement always sum to: 4. If two events are mutually exclusive, what is the probability that both occur at the same time? 5. If A and B are mutually e...

Week 5 Knowledge Check Homework Practice Questions Return to Assessment List Part 1 of 4 - Z-interval for Unknown Questions 7.0/ 7.0 Points Question 1 of 20 The FDA regulates that fresh Albacore tuna fish that is consumed is allowed to contain 0.82 ppm of mercury or less. A laboratory is estimating the amount of mercury in tuna fish for a new company and needs to have a margin of error within 0.03 ppm of mercury with 95% confidence. Assume the population standard deviation is 0.138 ppm of...

Quiz 5 MATH302 Part 1 of 8 - 3.0/ 3.0 Points Question 1 of 17 1.0/ 1.0 Points Q-Mart is interested in comparing its male and female customers. Q-Mart would like to know if the amount of money spent by its female charge customers differs, on average, from the amount spent by its male charge customers. To answer this question, an analyst collected random samples of 25 female customers and 22 male customers. Based on these samples, on average, the 25 women charge customers spent ...

math302 quiz 2 Part 1 of 6 - 5.0/ 5.0 Points Question 1 of 20 1.0/ 1.0 Points If a die is rolled one time, find the probability of getting a number greater than 2. A.2 B.-1 C.5/

math302 quiz 2

MATH 302 QUIZ 1 – QUESTION AND ANSWERS – SET 2 MATH302 Quiz 1 Part 1 of 3 - 12.0/ 12.0 Points Question 1 of 20 1.0/ 1.0 Points A histogram that is positively skewed is also called A.symmetric B. skewed to the right C. skewed to the left D. balanced Answer Key: B Question 2 of 20 1.0/ 1.0 Points Researchers may gain insight into the characteristics of a population by examining a A.description of the population B. sample of the population C. mathematical model desc...