MATH 221 Statistics For Decision Making (MATH221)

MATH 221 Week 1 QUIZ

MATH 221 Week 4 Quiz (100% Correct Answers)

MATH 221 Week 4 Quiz (100% Correct Answers)

MATH 221 Week 3 QUIZ 2

MATH 221 Week 2 QUIZ

MATH 221 Week 3 QUIZ 2

Statistics for decision making week 3 quiz chapters 1,2,& 3 Question 1 2 / 2 pts (CO 1) A survey of 128 DeVry statistics students found that 83% read the announcements each week. What is the population and what is the sample? Question 2 0 / 2 pts (CO 1) The measurements of 100 products from the assembly line show that 99% are correct. Is this percentage a parameter or a statistic and why? Question 3 2 / 2 pts (CO 1) Classify the data of the heights of ladders produced by a tool company. Ques...

Creating Graphs 1. Create a pie chart for the variable Car Color: Select the column with the Car variable, including the title of Car Color. Click on Insert, and then Recommended Charts. It shoul d show a clustered column and click OK. Once the chart is shown, right click on the chart (main area) and select Change Chart Type. Select Pie and OK. Click on the pie slices, right click Add Data Labels, and select Add Data Callouts. Add an appropriate title. Copy and paste the chart here. (4 points) 2...

Statistical Concepts: • Data Simulation • Confidence Intervals • Normal Probabilities Short Answer Writing Assignment All answers should be complete sentences. We need to find the c onfidence interval for the SLEEP variable. To do this, we need to find the mean and standard deviation with the Week 1 spreadsheet. Then we can the Week 5 spreadsheet to find the confidence interval. First, find the mean and standard deviation by copying the SLEEP variable and pasting it into the Week 1 spreads...