Math 221 week 5 quiz Study guides, Class notes & Summaries

MATH 221 - WEEK 5 QUIZ Statistics For Decision Making.

MATH 221 Statistics for Decision-Making Week 5 quiz with all correct answers. 100% COMPLETE SOLUTION.

MATH 221 Homework_ Statistics for Decision-Making 1 | Grade A Formula A recent survey of the alumni of a university inOf all DeVry students, a study found that 43% of them are business majors. The 4 3% would be considered a: dicated that the average salary of 10,000 of its 200,000 graduates was $130,000. The $130,000 would be considered a: Based on past experience, it is predicted that 31% of registered voters in Oklahoma will vote in the next primary. The 31% would be considered an example of: ...

MATH 221 Statistics for Decision-Making Week 5 quiz with all correct answers. 100% COMPLETE SOLUTION Document Content and Description Below Question 1 2 / 2 pts (CO 4) Consider the following table: Age Group Frequency 18-29 983 30-39 784 40-49 686 50-59 632 60-69 541 70 and over 527 If you created the probability distribution fo r these data, what would be the probability of 40-49? 0.237 0.425 0.189 Correct! 0.165 Question 2 2 / 2 pts (CO 4) Consider the following table of hours worked by part...

MATH 221MATH 221 WEEK 5 60 PINTS QUIZ

(TCO 6) In the standard normal distribution, the standard deviation is always Student Answer: 0 1 2 none of these 2. Question : (TCO 6) The area under a normal curve with mu = 8 and sigma = 3 is Student Answer: 0 1 2 none of these 3. Question : (TCO 6) If Larry gets a 70 on a physics test where the mean is 65 and the standard deviation is 5.8, where does he stand in relation to his classmates? Student Answer: He is in the top 10%. He is in the top 20%. He is in the bottom 20%. He is in the botto...

(TCO 6) In the standard normal distribution, the standard deviation is always Student Answer: 0 1 2 none of these 2. Question : (TCO 6) The area under a normal curve with mu = 8 and sigma = 3 is Student Answer: 0 1 2 none of these 3. Question : (TCO 6) If Larry gets a 70 on a physics test where the mean is 65 and the standard deviation is 5.8, where does he stand in relation to his classmates? Student Answer: He is in the top 10%. He is in the top 20%. He is i...

MATH 221 Week 7 Quiz (CO6) From a random sample of 55 businesses, it is found that the mean time that employees spend on personal issues each week is 5.8 hours with a standard deviation of 0.35 hours. What is the 95% confidence interval for the amount of time spent on personal issues? @See text page 301 (5.71, 5.89) (5.72, 5.88) (5.73, 5.87) (5.74, 5.90) (CO6) If a confidence interval is given from 8.54 to 10.21 and the mean is known to be 9.375, what is the margin of error? @See text page 301 1...

1. Question:(CO 3) Consider the following table. If you created the probability distribution for these data, what would be the probability of 30-39? 2. Question:(CO 3) Consider the following table of hours worked by part-time employees. These employees must work in 5-hour blocks.Find the mean of this variable. 3. Question:(CO 3) Consider the following table.Find the variance of this variable. 4. Question:(CO 3) Consider the following table.Find the standard deviation of this variable. 5. Que...

1. Question:(CO 3) Consider the following table. If you created the probability distribution for these data, what would be the probability of 60-69? 2. Question:(CO 3) Consider the following table of hours worked by part-time employees. These employees must work in 5-hour blocks.Find the mean of this variable. 3. Question:(CO 3) Consider the following table. Find the variance of this variable. 4. Question:(CO 3) Consider the following table. Find the standard deviation of this variable. 5. Q...