Module 3 Test - shawtlr.net

1 STA2023 Module Test 3 Name_____MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answersthe the problem. If necessary, round your answer to one more decimal place than that used for the )A scientist used the following data set showing the weight in pounds gained (or lost) by a sample of eightlaboratory animals given Drug X. Determine n, xi , and x. )n = 8;xi = ; x = )n = 8;xi = ; x = )n = 6;xi = ; x = )n = 6;xi = ; x = :BObjective: ( ) Perform Sample Mean CalculationFind the mean for the given sample data . Unless otherwise specified, round your answer to one more decimal placethan that used for the )The local Tupperware dealers earned these commissions last month:$ $ $ $ $ $ $ $ $ $ was the mean commission earned?

2 Round your answer to the nearest )$ )$ )$ )$ :DObjective: ( ) Find MeanFind the median for the given sample )The normal monthly precipitation (in inches) for August is listed for 20 different ) ) ) ) :CObjective: ( ) Find Median1 Provide an appropriate )The amount of money, in dollars, that an employee of a bank spent on lunch on six randomly selected daysyielded the following data set:9, 14, 5, 16, 10, 8 Compute xi 2 and xi2 . Explain the difference between the two )722 and 3844 ; xi 2 is the sum of the squares of the data , whereas xi2 represents the square ofthe sum of the )3844 and 722; xi 2 is the square of the sum of the data , whereas xi2 represents the sum of thesquares of the )3721 and 62; xi 2 is the square of the sum of the data , whereas xi2 represents the sum of thesquares of the )62 and 3844 ; xi 2 is the sum of the squares of the data , whereas xi2 represents the square ofthe sum of the :BObjective: ( ) *Know Concepts: Measures of CenterFind the mean for the given sample data .

3 Unless otherwise specified, round your answer to one more decimal placethan that used for the )Frank's Furniture employees earned $ , $ , $ , $ , $ , and $ last the mean wage of the employees. Round your answer to the nearest )$ )$ )$ )$ :DObjective: ( ) Find MeanFind the range and standard deviation for each of the two samples, then compare the two sets of )When investigating times required for drive-through service, the following results (in seconds) A120678997124687296 Restaurant B115126495698767895A)Restaurant A: 75; B: 70; is inconclusive as to which data set has more )Restaurant A: 57; B: 56; is inconclusive as to which data set has more )Restaurant A: 57; B: 77; measures indicate there is more variation in the data for restaurant B than the data forrestaurant )Restaurant A: 57; B: 70.

4 Measures indicate there is more variation in the data for restaurant B than the data forrestaurant :CObjective: ( ) Compare Range and Standard Deviation for Two Samples2 Provide an appropriate )The test scores of 40 students are summarized in the frequency distribution below. Find the Students50 608 60 70870 80680 90690 10012A)s = 14B)s = )s = )s = :BObjective: ( ) Find Sample Deviation (Grouped data )Find the range for the given )The owner of a small manufacturing plant employs six people. As part of their personnel file, she askedeach one to record to the nearest one-tenth of a mile the distance they travel one way from home to six distances are listed ) miB)1 miC) miD) miAnswer:DObjective: ( ) Find Range9)Jeanne is currently taking college economics.

5 The instructor often gives quizzes. On the past five quizzes,Jeanne got the following 20 3 13 9A)1B)20C)3D)17 Answer:DObjective: ( ) Find RangeProvide an appropriate )The heights of a group of professional basketball players are summarized in the frequency distributionbelow. Find the standard deviation. Round your answer to one decimal (in.) Frequency70 72372 74774 761676 781278 801080 82482 841A) ) ) ) :AObjective: ( ) Find Sample Deviation (Grouped data )3 Obtain the five-number summary for the given )The weights (in pounds) of 18 randomly selected adults are given 146 187 156 119 138127 143 179164 182 202114 173 131 150 169 173A)114, , 150, , 202 poundsB)114, , 150, , 202 poundsC)114, 131, , 173, 202 poundsD)114, , , , 202 poundsAnswer:CObjective: ( ) Obtain Five-Number SummaryDetermine the quartile or interquartile range as )The normal annual precipitation (in inches) is given below for 21 different cities.

6 Find the thirdquartile, ) ) ) ) :BObjective: ( ) Find Quartile/Interquartile RangeConstruct and interpret a boxplot or a modified boxplot as )The weekly salaries (in dollars) of 24 randomly selected employees of a company are shown a boxplot for the )The data is highly )The data is highly )The data is fairly )The data is fairly :BObjective: ( ) Construct and Interpret Boxplot or Modified Boxplot414)The normal monthly precipitation (in inches) for August is listed for 20 different cities. Construct aboxplot for the )The data is slightly )The data is symmetrical. It is a uniform )The data is slightly )The data is highly :AObjective: ( ) Construct and Interpret Boxplot or Modified BoxplotObtain the five-number summary for the given )The test scores of 15 students are listed 47 50 53 5763 67 71 72 7685 87 90 94 95A)40, , 71, , 95B)40, 53, , 87, 95C)40, , , , 95D)40, 55, 71, 86, 95 Answer:DObjective: ( ) Obtain Five-Number Summary5 Provide an appropriate )Find the z-score corresponding to the given value and use the z-score to determine whether the value isunusual.

7 Consider a score to be unusual if it is at least three standard deviations above or below the the z-score to one decimal place, if time for the 100 meter sprint of seconds at a school where the mean time for the 100 meter sprint seconds and the standard deviation is ) ; not unusualB) ; unusualC) ; unusualD) ; not unusualAnswer:DObjective: ( ) Compare Relative StandingSolve the )The mean of a set of data is and its standard deviation is Find the z-score for a value Round your final answer to two decimal ) ) ) ) :AObjective: ( ) Find Standardized VariableProvide an appropriate )Obtain the population standard deviation, , for the given data . Assume that the data representpopulation data .

8 Round your final answer to one more decimal place than that used for the weekly salaries (in dollars) of seven government workers are listed below489833846858918841832A)$17, )$ )$ )$ :BObjective: ( ) Find Population Standard Deviation19)Obtain the population standard deviation, , for the given data . Assume that the data representpopulation data . Round your final answer to one more decimal place than that used for the number of years of teaching experience is given below for 12 high-school ) yrB) yrC) yrD) yrAnswer:CObjective: ( ) Find Population Standard Deviation620)Find the z-score corresponding to the given value and use the z-score to determine whether the value isunusual. Consider a score to be unusual if it is at least three standard deviations above or below the to the z-score to two decimal places, if necessary.

9 A department store, on average, has daily sales of $28, The standard deviation of sales is $2000. OnTuesday, the store sold $35, worth of ) , not unusualB) , not unusualC) , unusualD) , unusualAnswer:CObjective: ( ) Compare Relative Standing7