Sample 12345678 2 9 10 11 12 13 Temperature 185 183 187 188 189 189 192 195 196 198 193 196 200 000 Strength 5150 5125 5123 5140 5195 5190 5150 5155 5156 5162 5172 5196 5063 5005

An automotive part must be machined to close tolerances to be acceptable to customers. Production specifications call for a maximum variance in the lengths of the parts of 0.0004. A quality control sample produced the data in the Microsoft Excel Online file below. Using a = 0.05, test to see whether the population variance specification is being violated. X Open spreadsheet 1. Formulate the null and alternative hypotheses for this application. Ho: 0² Ha: 0² 2. Test statistic = 3. The p-value is 4. Conclusion: 5. Test results: Check My Work ↑ î (to 2 decimals) Reset Problem ŵ ↑

141% v Zoom Add Page Insert Table Chart Text Shape Media Comment Collaborate Format Document 13! 6227020800 14! 87178291200 This document has missing fonts. Show 15! 1307674368000 16! 20922789888000 17! 355687428096000 18! 6402373705728000 19! 121645100408832000 20! 2432902008176640000 2) After a recent bank robbery, three eyewitnesses reported seeing a man with glasses flee the scene. The police suspect Ricky and make up an identity parade of five men with glasses. Ricky takes his place in the parade alongside four randomly chosen stooges. Two of the eyewitnesses identify Ricky and the third points to one of the stooges. What's the probability that Ricky would have been chosen by two of the three eyewitnesses if each witness had chosen completely at random? Solve this problem using the Binomial Probability Mass Function. (Tip: This problem will be easier to solve if you first find p, the probability of success on any one trial; in other words, the probability of a single eyewitness…

An experiment was performed to determine whether different types of chocolate take different amounts of time to dissolve. Forty people were divided into five groups. Each group was assigned a certain type of chocolate. Each person dissolved one piece of chocolate, and the dissolve time (in seconds) was recorded. For comparison, each person in each group also dissolved one piece of butterscotch candy; these pieces were identical for all groups. The data, which include the group, the dissolve times for both chocolate and butterscotch, the difference between the dissolve times, and the ratio of the dissolve times, are presented in the following table. Note that the design is slightly unbalanced; group 3 has nine people and group 5 has only seven. Group Chocolate Butterscotch Difference Ratio 60 135 75 2.25 865 635 230 1.36 122 63 59 1.94 110 75 35 1.47 71 37 34 1.92 81 58 23 1.40 2405 1105 1300 2.18

19 Males    Females85    7877    9648    5760    6850    5562    8155    7876    8651    8864    5572    3760    6563    8680    7780    7863    6468    6398    7840    6283    6770    8462    8375    6870    7655    8466    8953    8779    9272    9066    9566    6897    9060    8064    8157    7459    5565    10171    7484    7858    79

Student  ID Math Score Project Score Age (years) Sex 001254 52 75 15 M 003256 78 89 15 F 001547 92 82 18 F 012589 91 66 17 M 021475 72 93 14 M 032658 46 76 13 M 009561 68 76 14 F 008654 52 82 12 F 008561 83 75 16 M 003547 45 78 14 F 047452 73 96 14 M 041212 64 79 13 F 032320 41 67 13 F 000258 77 72 15 F 001478 82 75 17 M 019521 59 83 15 M 017451 80 71 17 F 016335 48 76 13 M 002474 57 80 14 F 095844 97 71 18 F 097304 86     86 17 M 090024 75 85 15 F 034702 81 80 16 F 001910 67 74 14 F 006454 86 77 17 M 087478 63 82 13 M 078474 68 79 14 F 000977 54 89 12 M 063010 91 73 18 M 007406 46 77 15 F 025740 93 85 17 M…

Male Female   27,767 20,516   17,413 24,972   6,080 4,900   28,523 17,661   25,137 11,901   9,821 17,562   21,857 9,865   16,491 21,047   27,687 12,095   23,361 20,089   12,272 16,244   9,584 14,395   13,562 15,467   23,151 23,501   20,071 5,715   142 19,698   21,957 21,640   8,722 18,345   21,058 16,616   17,940 15,249   15,001 28,849   20,938 6,825   6,151 17,111   8,370 4,197   27,687 12,989   11,589 16,879   12,021 13,322   13,709 20,292   12,888 19,417   17,879 14,061   13,743 32,349   11,268 8,738   22,102 10,475   16,788 11,971   10,387 28,702   13,809 22,947   15,644 16,386   11,044 20,101   17,933 20,564   11,413 14,483   11,842 17,349   6,794…

Presidential Inaugural Addresses Ever wonder how many words are in a typical inaugural address? The following data represent the lengths of all the inaugural addresses (measured in word count) for all presidents up to Barack Obama. 1425 1125 1128 5433 2242 2283 3319 2015 3217 135 4467 2308 2906 2821 1172 3967 1337 1883 1668 2406 2217 2480 1807 3634 3838 698 985 559 2978 3318 1355 Source: infoplease.com 1802 1340 1526 2158 4776 1681 4059 996 4388 3801 1087 2446 2130 1507 2463 2449 2170 2546 1729 8445 1571 209 1437 2073 1175

What is the median

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