Statistic

Confidence Interval Lab Objective: To explore the meaning of "confidence interval" & "margin of error" Premise: To find an interval of values to estimate the average area of rectangles in the accompanying page. Procedure: A WRECKED-ANGLE a. Generate 5 random numbers from 1 - 100. This may be done by using the following function: rndInt(1,100,5). You need to first load MATH menu, followed by PRB submenu. List these five numbers:(Make sure there are no repeating values) b. Locate the five rectangles corresponding to the above five numbers & list their areas: c. Average the five areas from b: d. Repeat steps a-c three more times: e. List the 4 averages in the first 4 lines of the table. Then work with others (or you could this alone )until the columns that is titled "Averages" is completely filled in. f. Next we would like to use an average (such as the one you found above) to predict population average, probably by suggesting a range of values. Here we go. .. . Let's assume a sampling error of 13, meaning add and subtract three to the sample average. Averages | Interval Does the interval Averages Interval Does the interval (Average + 3) include the true (Average + 3) include the true average*? average*? (yes or no?) (yes or no?)Averages Interval Does the interval Averages Interval Does the interval (Average + 3) include the true (Average + 3) include the true average*? average*? (yes or no?) (yes or no?) * True average(1)=7.44 h. Next find out the proportion of the above 28 intervals whose ranges include the true population mean. Percent Inclusion(include a fraction as well as decimal or percent): That is how good the sampling error of 3 is. i. How can we find a sampling error that is 95% good (confident)? Don't answer letter i. That's is rhetorical question. Thx.3 10 14 11 13 17 12 15 8 20 19 22 23 24 26 35 27 33 25 30 31 37 28 34 36 32 38 39 50 40 47 48 58 52 60 56 59 53 65 51 55 62 63 69 71 76 77 78 74 83 70 82 85 73 68 81 84 79 86 90 87 88 93 100 92 94 95 96 98 99