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- Assets in billions of dollars of the four wealthiest people are 36, 30, 21, and 19 with a sample size of 2 what is the mean of the populationCompare the distributionMitchell is getting ready to take a baseball rules exam in order to becomne certified as a baseball umnpire in his local community. Past scores on the rules exam form a normal distribution with u = 80 and o = 6. Mitchell must score in the highest 25% of the distribution in order to become a certified umpire. Which minimum score does Mitchell need to obtain on the rules exam to become a certified umpire? OX= 76 O X- 84 OX= 86 OX-81
- A survey was conducted two years ago asking college students their top motivations for using a credit card. You think this distribution has changed. You randomly select 425 college students and ask each one what the top motivation is for using a credit card. Can you conclude that there has been a change in the distribution? Use a = 0.025. Complete parts (a) through (d). Response Old Survey % 29% New Survey Frequency, f Rewards 110 Low rates Cash back Discounts 23% 96 21% 109 7% 46 Other 20% 64 O B. The distribution of motivations is 110 rewards, 96 low rate, 109 cash back, 46 discounts, and 64 other. O C. The distribution of motivations is 29% rewards, 23% low rate, 21% cash back, 7% discounts, and 20% other. Which hypothesis is the claim? o Ho (b) Determine the critical value, Yo, and the rejection region. X = 11.143 (Round to three decimal places as needed.) Choose the correct rejection region below. Oc. XAFTER ENTERING TEST SCORES FROM HER STATISTICS CLASS, THE INSTRUCTOR CALCULATES THE MEAN AND THE MEDIAN AND FINDS THAT THE MEAN IS SIGNIFICANTLY SMALLER THAN THE MEDIAN? WHAT MIGHT THIS IMPLY ABOUT THE SHAPE OF THE DISTRIBUTION OF HER STUDENTS' TEST SCORES?** A The following box-plot shows the time requirel to complete the first examination in Math-101 course for 1000 students, Use this information to answer questions(36.37) 36. The variable is (A) Math - 101 (B) Time (C) First exam (D)1000 students 37.The five-number sumuray are (A) 10,15,25,30,35 (B) 15, 20, 25, 30, 40 ((C) 10, 20, 25. 30, 40 (D) 10, 20, 25.30, 35 38. A data with 1 measurements has( mean=6), median= 5, and mode=3 The range of the data is (A) 11. (B) 8 (C) 3d (D)2 39. Marks on a Math exam have a mound shape distribution. 95% of the marks are between 10 and 24 The mean of the exam marks is (A) 12 (B) 20 (C) 17 (D) 15 40.0ne of the following is consldered to be as measure of position standing (A) a (B) mean (C) median (D) percentiles 41. The median of tbe data set (2.6, 1,10,7) In equal to (A) 0 (B)2 (C) 1 (D)7Find the mean as well pleaseTime for pizza delivery by a certain restaurant follows a uniform distribution and can range from 20 to 45 minutes. 60% of the time, the delivery time will fall above what value?Review(19a): The mean of a distribution is 35. The median is 30. The mode is 25. The distribution is (a) negatively skewed (b) positively skewed (c) symmetric (d) both b anc c (e) There is two little information given to determine the shape of the distribution.For the residents in 2014, use R to calculate the interval with 99% certainty that the interval contains the actual population mean of the residents by census tracts. Type in the interval with keyboard. We also know that in each year, the number of residents by census tract in the State of Maryland follows a normal distribution, and the variance in the number of residents within the State of Maryland is the same for different years. POP2014: 3072, 1989, 3794, 2689, 3211, 3722, 4385, 4009, 7598, 3862, 3097, 2726, 4881, 4157, 2570, 2512, 2518, 4863, 4147, 7139, 6067, 6819, 3705, 3239, 3824, 4977, 2576, 2940, 9791, 5231, 5634, 5337, 4205, 3888, 5562, 3335, 3770, 1808, 2045, 1532, 5420, 4993, 6109, 4377, 5424, 4976, 4507, 3738, 2827, 3485, 1559, 5199, 4702, 3971, 3803, 3356, 4670, 3816, 5477, 4760, 3126, 3630, 3755, 3795, 2578, 3382, 4005, 2442, 6096, 3799, 3843, 3836, 6046, 6431, 3561, 3142, 4829, 5058, 2471, 6119, 3523, 3094, 3146, 3356, 2618, 2366, 4266, 4016, 6080, 1554, 6878, 3645,…The waiting times for commuters on the Red Line during peak rush hours follow a uniform distribution between 0 minutes and 12 minutes.Jamie’s Intro to Biology professor tells the class that on the first exam, the mean score is a 70, but the median score is an 84. What does this tell you about the skewness of the distribution? What measures of center and spread would you use to describe this distribution? a. The distribution is skewed left, so we should use the mean and the median to describe the distribution. b. The distribution is skewed left, so we should use the median and the IQR to describe the distribution. c. The distribution is skewed right, so we should use the median and the IQR to describe the distribution. d. The distribution is symmetric, so we should use the standard deviation and the IQR to describe the distribution. e. The distribution is skewed right, so we should use the mean and the IQR to describe the distribution.SEE MORE QUESTIONS
