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##### QNT 351 Week 3 MyStat Lab

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Question;QNT;351 Week 3 MyStat Lab;Week;3 Problems;1. An industrial group reports that there;were approximately 122,000 industrial robots operating in a region last year.;The graph shows the percentages of industrial robot units assigned to each of;six task categories.Complete;parts a through e bellow.;a.;What type of graph is used to describe the data?;b.;Identify the variable measured for each of the 122,000 industrial robots;c.;Use the graph to identify the task that uses the lowest percentage of;industrial robots;d.;How many of the 122,000 industrial robots are used for assembly?;e.;What percentage of industrial robots are used for either arc welding or;dispensing/coating?;2. In one university, language professors;incorporated a 10-week extensive readings program to improve students? Japanese;reading comprehension. The professor collected 262 books originally written for;Japanese children and required their students to read at least 40 of them as;part of the grade in course. The books;were categorized into reading levels (color-coded for easy selection) according;to length and complexity. Complete parts a trough c.;a.;Compute the relative frequencies in each category.;b.;Construct a relative frequency bar graph for the data. Choose the correct graph bellow;c.;Convert the relative frequency bar graph into a Pareto diagram. Interpret the;graph. Choose the correct graph bellow;Use;the diagram to identify the reading level that occurs more often. Choose the;correct answer bellow;3. One organization estimates that there;are 13,140 rhinoceroses living in the wild in a continent. A breakdown of the;number of rhinos of each species is reported in the accompanying table.;Complete parts a trough c.;a.;One of the 13,140 rhinoceroses is selected and the species of the rhinoceros is;determined. What type of data (quantitative or qualitative) is measured?;b.;Construct a frequency bar chart for the data. Choose the correct graph bellow.;c.;Convert the frequency bar chart, part b, into a Pareto diagram. Interpret the;results;The;most populated species of rhinoceros appear to be the ________and the least;most populated species seems to be the;4. One organization estimates that there;are 13,090 rhinoceroses living in the wild in a continent. A breakdown of the;number of rhinos of each species is reported in the accompanying table.;Complete parts a through c.;a.;One of the 13,090 rhinoceroses is selected and the species of the rhinoceroses;is determined. What type of data (qualitative or quantitative) is measured?;b.;construct a frequency bar chart for the data. Choose the correct graph bellow.;c.;Convert the frequency bar chart, part b, into a Pareto diagram. Interpret the;results. Choose the correct graph bellow.;Interpret;the results;The;most populated species of rhinoceros appear to be________ and the least most;populated species seems to be the;5. A government study found that the;number of non-cash payments in a country reached 92.7 billion transactions;during the year 2007. The pie chart to the right describes the proportions of these;non-cash transactions that were made with credit cards (CC), debit cards (D);checks (C), electronic benefit transfers (EBT) cards, and automatic clearing;house (ACH) payments. Complete parts a trough d.;a.;Describe the population of interest in the study. Choose the correct answer;bellow.;b.;Estimate the number of non-cash payments in 2007 that were made with credit;cards;c.;What percentage of all non-cash payments in 2007 were made with either credit;or debit cards?;d.;Convert the pie chart into a Pareto diagram and interpret the figure. Choose;the correct graph bellow;Interpret;the figure. Choose the correct answer bellow.;6. A group of marketing professors asked;every fourth adult entrant to a mall to participate in a study. A total of 106;shoppers agreed to answer the question, ?Made locally? means what percentage of;local labor and materials?? The responses of the 106 shoppers are summarized in;the table to the right. Complete parts a trough c bellow.;a.;What type of data-collection method was used?;b.;What type of variable, quantitative or qualitative, is measured?;c.;Present the data in the table in graphical form. Which bar graph bellow;correctly represents the data in the table?;7. Use the relative frequency table shown;to the right to calculate the number of the 400 measurements falling into each;of the measurement classes. Then graph a frequency histogram for these data.;Calculate the number of measurements that fall into each;class;Choose the correct graph bellow;8. Use the relative frequency table shown;to the right to calculate the number of the 400 measurements falling into each;of the measurement classes. Then graph a frequency histogram for these data.;Calculate the number of measurements that fall into each;class;Choose the correct graph bellow;9. Consider the stem-and-leaf display to;the right;a. How many observations;were in the original data set?;b. In the bottom row of;the stem-and-leaf display, identify the stem, and the numbers in the original;data set represented by this stem and its leaves.;c. Re-create all the;numbers in the data set and construct a dot plot;a.;How many observations were in the original data set?;b. In the bottom row of the stem-and-leaf display, identify;the stem, and the numbers in the original data set represented by this stem and;its leaves.;c. Re-create all the numbers in the data set and construct a;dot plot;10. Certain measurements;are summarized in the histogram to the right. What percentage of the;measurement are greater then 12?;The histogram shows that 35%;of the measurements are greater than 12;11. Calculate the mean;and median of the following grade point averages.;12. Calculate the mean for samples for;which the sample size and?x are given bellow;a. n=10,?x=83;b. n=16,?x=352;c. n=45,?x=36;d. n=18,?x=238;13. Five banks;have been ranked by the amount charged to credit and debit cards issued by the;banks. The table to the right gives the total amount charged in 2007 for the;top ranked banks.;a. Find the mean;amount charged for the top five banks and practically interpret this value;b. Find the median;amount charged for the top five banks and practically interpret this value.;a.;The mean amount charged for the top five banks is $359.9 billion;Interpret;this value. Choose the correct answer bellow;b.;The median amount charged for the top five banks is $450.57 billion;Interpret;this value. Choose the correct answer bellow;14. Calculate the;range, variance, and standard deviation for the following sample;5, 2,1,0,1;15. Calculate the;variance and standard deviation for samples with the following statistics;a. n=12,?x?=83;?x=24;b. n=37,?x?=371;?x=90;c. n=19,?x?=19;?x=18

Paper#52172 | Written in 18-Jul-2015

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