The following data represent tree trunk circumferences (in mm) foa a random sample of 60 6-year old Mahogany trees in a man-made forest in Bohol. 108 99 106 102 115 120 120 117 122 142 106 111 119 109 125 108 116 105 117 123 103 114 101 99 112 120 108 91 115 109 114 105 99 122 106 113 114 75 96 124 91 102 108 110 83 90 69 117 84 142 122 113 105 112 117 122 129 100 138 117  (a) Make a frequency table with seven classes showing class limits, class boundaries, midpoints, frquencies, and relative frequencies. (b) Draw a histogram (c) Draw an ogive

An online instructor wants to estimate the mean amount of time that students spend in the online homework system on a particular homework assignment. The instructor takes a random sample of 30 students and looks up the amount of time recorded by the system for that assignment.

Find the five-number summary of the scores in the Math 130 test pre-sented in Table 4.1, page 112. Draw the boxplot.

The IQ scores of 50 students are given below.   118 85 110 86 109 106 110 89 106 115 107 99 91 114 112 106 89 118 90 119 101 117 111 86 86 100 115 94 112 110 106 88 86 99 102 99 109 104 115 85 94 87 102 96 106 88 97 86 106 119   (a) Construct a grouped frequency distribution for the data. Use 85-89 for the first class and use the same width for each subsequent class. Class Frequency    85   -   89    -     -     -     -     -     -    (b) Which of the following is the correct histogram for this data? 24681012IQ Score84.589.594.599.5104.5109.5114.5119.5Frequency[Graphs generated by this script: setBorder(54,40,20,15); initPicture(80,119.5,0,12);axes(238,2,1,null,2); fill="blue"; textabs([165,0],"IQ Score","above");line([84.5,-0.24],[84.5,0.24]); text([84.5,0],"84.5","below");line([89.5,-0.24],[89.5,0.24]); text([89.5,0],"89.5","below");line([94.5,-0.24],[94.5,0.24]); text([94.5,0],"94.5","below");line([99.5,-0.24],[99.5,0.24]);…

The IQ scores of 50 students are given below. 89 111 104 105 106 104 96 96 116 89 113 93 93 87 86 98 108 13 88 104 92 108 89 95 94 97 89 115 116 103 96 86 88 109 99 99 88 93 86 106 88 118 113 96 93 119 87 85 105 110 (a) Construct a grouped frequency distribution for the data. Use 85-89 for the first class and use the same width for each subsequent class. Class Frequency 85 89 -| (b) Which of the following is the correct histogram for this data?

Please help with 1,2,3

Consider the sample of 65 customer satisfaction ratings given in the table (below).    39 46 42 40 45 44 44 44 45 45 44 46 46 46 41 46 46   38 40 40 41 43 38 48 39   42 39 47 43 47 43 44 41   42 40 44 39 43 36 41 44   41 42 43 43 41 44 45 42   38 45 45 46 40 44 44 47   42 44 45 45 43 45 44 43            Click here for the Excel Data File    Carry out a chi-square goodness-of-fit test of normality for the population of all customer satisfaction ratings using α = .05. Recall that we previously calculated x⎯⎯x¯  = 42.95 and s = 2.6424 for the 65 ratings. Use the Empirical Rule to create the intervals. (Round your expected frequencies to 2 decimal places. Round your answer to 3 decimal places.)

what is the population of focus? a reasearch is being done to determine canopy spread of a type of MATURE tree in a given location.   the location has 40,000 of these and the mature trees are estimated at 10feet tall. the research collected spread from 1000 random mature trees.