A random sample of 121 CEOS is selected to determine the number who are less than 39 years old. The ages below are from the sample taken. 35 35 35 36 36 36 36 36 36 36 37 37 37 37 37 37 37 38 38 38 39 39 39 39 39 40 40 40 40 40 40 40 40 40 41 41 41 41 42 42 42 42 42 42 43 43 43 43 43 43 44 44 45 45 45 45 45 45 45 45 46 46 46 47 47 47 48 48 49 49 49 49 49 49 49 50 50 50 50 50 50 51 51 52 52 52 52 53 53 53 53 53 53 54 54 54 54 54 54 55 55 55 55 55 56 56 56 56 56 56 56 56 56 58 58 58 59 60 60 60 60 a) How many CEOS are less than 39? (Enter as integer) b) How many CEOS are in the sample? |(Enter as integer) c) What is the p value for the sample? (Round to four decimal places)
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The given data set is,
(a)
The number of CEO's are less than 39 is,x= 20
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- 1. Construct frequency distribution table based on the scores of 75 randomly selected students. 37 35 49 42 46 37 26 30 46 45 27 38 302 47 30 43 C. D. 33 42 42 Scores 29 38 26 31 42 26 to 30 31 to 35 36 to 40 41 to 45 46 to 50 Total 41 26 45 31 41 28 49 29 34 46 50 38 35 43 34 38 39 39 43 41 39 31 Frequency 13 10 16 44 48 43 37 18 18 39 75 46 46 45 36 28 32 46 36 48 43 37 39 26 46 38 46 48 48 50 17.33% Percentage (%) 13.33% 21.33% 24% 42 24% 100% 27 50 45 31 A. Based on the frequency distribution, compute measures of central tendency, measures of variation, Skewness and kurtosis. B. Based on the raw data, compute measures of central tendency, measures of variation, Skewness and kurtosis using Excel. Based on the computed value of skewness and kurtosis in A and B, describe the shape of the distribution. Do you think that computed value for grouped and ungrouped data are the same?Suppose a researcher is interested determining whether on average, driving times on the major traffic routes are approximately the same. The following data are randomly collected from three major traffic routes.The entries in the table are drivings times in minutes on the these routes. Route 1 Route 2 Route 3 45 39 41 42 40 40 46 39 41 43 40 42 43 39 43 43 39 43 43 41 40 43 38 40 48 41 41 45 39 43 39 40 39 40 46 43 40 41 40 42 40 40 46 46 41 A One-Way ANOVA test was conducted at a 0.02 level of significance. The results are shown below. Note that some values in the table might be in scientific notation. Say, 1.65E-07 means 1.65x10-7 or 0.000000165.ANOVA: Single Factor SUMMARY Groups Count Sum Average Variance Route 1 10 441 44.100 3.433333 Route 2 15 599 39.933 3.495238 Route 3 20 833 41.650 3.502632 ANOVA Source of Variation SS df MS F P-value F crit Between Groups 104.19444…40 The top 20 quarterbacks in the NFL with the most Touchdowns (TD) in the 2020 season were selected The data comes from a normally distributed population. Player TD Aaron Rodgers 48 Russell Wilson Tom Brady 40 38 Patrick Mahomes Josh Allen 37 Kirk Cousins 35 Deshaun Watson 33 Ryan Tannehill 33 Ben Roethlisberger 33 Justin Herbert Derek Carr 27 Matthew Stafford Matt Ryan 26 Kyler Murray Baker Mayfield Lamar Jackson Philip Rivers 24 Drew Brees 24 33,35,37,38, 40ot 40+48 Jared Goff Carson Wentz 1) Data Analysis – Find the following rounding answers to the whole number when necess: Mean: 30 Median: Mode: Midrange: Range: Standard Deviation:
- In a study conducted by some Statistics students, 71 people were randomly assigned to listen to rap music, music by Mozart, or no music while attempting to memorize objects pictured on a page. They were then asked to list all the objects they could remember. The summary statistics for each group are shown in the table. Complete parts a and b. Rap 23 Mozart No Music Count Mean SD 31 17 11.61 8.04 13.92 4.84 4.48 3.32 Let group M correspond to Mozart listeners and group R correspond to rap listeners. Write the null and alternative hypotheses. Choose the correct answer below. O A Ho Hu - He =0 HA: HM- HR#0 B. Ho: HM-HR =0 HA HM HR 0 OC. Ho Hu- HRThe table below contains the periodontal status of individuals and their sex. Periodontal status refers to gum disease where individuals are classified as either Healthy, have Gingivitis, or have Periodontal Disease (Perio). Female Male Total Healthy 2108 1124 3232 Gingivitis 1582 937 2519 Perio 873 931 1804 Total 4563 2992 7555 Find Pr{Female or Gingivitis). If necessary, round your answer to 3 places after the decimal.The table below gives the number of suicides estimated in the U.S. for a recent year by age, race (black or white), and sex. We are interested in possible relationships between age, race, and sex. We will let suicide victims be our population. Race and Sex 1-14 15-24 25-64 over 64 TOTALS white, male 210 3,360 13,610 22,050 white, female 75 585 3,385 4,930 black, male 10 460 1,065 1,670 black, female 0 45 265 330 all others TOTALS 310 4,650 18,780 29,760The test scores of 56 students in Mathematics are the following: Вoys: 72 75 92 86 74 80 71 78 90 85 75 74 81 76 86 81 90 89 88 85 92 92 87 90 87 93 94 94 Girls: 89 88 73 81 89 74 74 76 86 74 75 88 78 79 75 76 76 96 87 75 71 78 72 71 71 74 74 71 Determine the following: Median = Q1 = Q3 = D9 =The following data represents the age of 30 lottery winners. 22 29 34 37 39 39 42 42 42 43 44 46 46 49 49 52 55 61 63 65 67 68 68 69 74 75 75 77 79 88 Complete the frequency distribution for the data. Bin Frequency [20,30) [30,40) [40,50) [50,60) [60,70) [70,80) [80,90)A local bookstore arranges book counter in different schools around the year. The CEO says that, compare to last year, the number of orders received in school has been dropped this year. The table below shows the number of orders received in a random sample of 14 schools in this year and last year. School 1 3 4 6. 8. 9. 10 11 12 13 14 This year 85 35 96 45 33 52 67 77 45 67 43 76 80 65 Last year 92 38 93 81 42 50 61 89 56 63 49 65 92 81 Test, at 5% level of significance, is there sufficient evidence to conclude that the CEO's statement is correct. (The test report must include (i) null hypothesis and alternative hypothesis, (ii) rejection region, (iii) calculation of test statistics, and (iv) conclusion.)A random sample of 30 large companies in the united states shows the amount in million of dollars , that each company donated to charity For a specific year. Construct a frequency distribution for the data using 9 classes . 26 25 19 31 14 48 35 43 25 46 17 21 57 58 34 41 12 27 15 53 16 63 82 23 52 56 75 19 26 88In recent year, 28 US States had one or more tribal gambling casinos. The following table presents the number of tribal gambling casinos in those states.3 2 26 70 2 2 87 3 4 3 22 39 314 7 3 21 8 2 11114 8 14 1 34 31 4 Find the 5-number summaryConstruct a boxplot for these dataA 2012 study of freely forming groups in bars all over Europe examined the natural behavior of groups. The researchers recorded the group size (number of individuals in the group) of all 501 groups in the study that were naturally laughing. The findings were displayed in the figure below. 300 Number of groups 250 200 O 52 O 2.7 0 2 150 3.5 4 100 50 0 254 2 Enter your answer here The median laughter group size in this study is 168 3 The mean laughter group size in this study is O 100.2 Enter your answer here 52 4 5 Laughter group size 21 6 6 Can we conclude from these findings that, in European bars in 2012, smaller groups were more likely than larger groups to be naturally laughing? Explain your statistical reasoning in one sentence.SEE MORE QUESTIONS