Determine type of sampling used a i collected shoe

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4.Determine type of sampling used:a)I collected shoe sizes from my family_______convenience______________b)1003 adults were called after their phone numbers were randomly generated by computer __________simple random sample_________c)Police stopped every sixth driver for sobriety test __________systematic__________d)U.S.D.O.C. collected data by randomly selecting8Federal prisons and surveying every prisoner ________stratified_____________5.I collected radon samples from basements in my neighborhood and obtained the following:Radon in cPiFrequency2-526-9210-13614-1715Identify class width4Identify class midpoints3.5, 7.5, 11.5, 15.5Identify class boundaries1.5, 5.5, 9.5, 13.5, 17.5
Create a histogram for these data.3.57.511.515.50246810121416HistogramClass MidpointsFrequency6.Create a scatterplot of car weights and braking distance using the data below. Based on the result, does there appear to be a relationship between weight of a car and its braking distance?Weight (lb)403531154115365035654030Braking Distance (ft)1311361291271461463000320034003600380040004200110120130140150Braking distance/ Weight of vehicleWeightBraking Distance
7.The weekly salaries for teachers of the different grades at my school are as follows:KindergartenFirstSecondThirdFourthFifth7746491210546431612

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