QuestionAnswered step-by-stepJUST NEED THE ANSWER!2.Elaine gets quiz grades of 71, 75, and 64. She gets a 60 on her final exam. Find the weighted mean if the quizzes each count for 30% and the final exam counts for 50% of the final grade. (Round to one decimal place)4.78,82,86,88,92,97Data point 925.The frequency distribution for the weekly incomes of students with part-time jobs is given below. Construct the corresponding relative frequency distribution. (Round relative frequencies to the nearest hundredth of a percent if necessary)Income ($) Frequency200 – 300 63301 – 400 73401 – 500 91501 – 600 896. Use the given table below to find the mean. (Round to the nearest tenth)Years President LivedAfter First Inauguration Frequency0-4 85-9 210-14 515-19 720-24 425-29 630-34 035-39 17.Find P85 for the following data points.110, 120, 178, 213, 234, 234, 235, 237, 240, 243, 245, 245250, 250, 251, 252, 254, 255, 255, 259, 260, 266, 269, 27311. Find Q3 for the indicated data values.110, 120, 178, 213, 234, 234, 235, 237, 240, 243, 245, 245250, 250, 251, 252, 254, 255, 255, 259, 260, 266, 269, 27313.True or False:Given a frequency distribution,it is possible for that frequency distribution to bemulti-modal.14. Use the given pie chart to determine the Central Anglefor the topic “Slamming”. (Round answer to a whole number)15. Use the given table below to find the class boundaries. (List them in ascending order use a comma as necessary)White Blood CellCount of Males Frequency3.0-4.9 85.0-6.9 157.0-8.9 119.0-10.9 511.0-12.9 116. True or False:If the standard deviation of a sample is 3kg,then the variance is 9kg? (Be careful of the unit measure!)18.Thirty Duracellbatteries were tested to see how long they lasted.The results,to the nearest minute,are below:423,369,387,411,393,394,371,377,389,409,392,408,431,401,363,391,405,382,400,381,399,415,428,422,396,372,410,419,386,390You are are asked to construct a frequency distribution to represent the data.It it ismadeknown to you thatyour frequency distribution must have 8 classes. With that being said, what is the frequency of the 5th class?20. Use the given table below to find the class boundaries. (List them in ascending order use a comma as necessary)Years President LivedAfter First Inauguration Frequency0-4 85-9 210-14 515-19 720-24 425-29 630-34 035-39 123. The weights (in pounds) of 30 newborn babies are listed below. Construct a boxplot for the data set.5.5 5.7 5.8 5.9 6.1 6.1 6.3 6.4 6.5 6.66.7 6.7 6.7 8.9 7.0 7.1 7.1 7.1 7.2 7.27.4 7.5 7 .7 7.7 7.8 8.0 8.1 8.1 8.3 8.724. Use the given table below to find the cumulative frequency of the 7th class.Verbal IQ Scoreof SubjectExposed to Lead Frequency50-59 460-69 1070-79 2580-89 4390-99 26100-109 8110-119 3120-129 226. Use the given table below to find the relative frequency of the 3rdclass.(Round to the nearest thousandth)Ages of Best ActorWhen Oscar Was won Frequency20-29 130-39 2640-49 3550-59 1360-69 670-79 127. When Steve Jobs was Chief Executive Officer (CEO)of Apple,he earned an annual salary of $1.The CEOsof the 50 largest U.S. companies had a mean salary of $1,449,779 and a standard deviation of $527,651 (based on USA Today). If we consider “usual”salaries to be those that convert to z-scores between -2 and 2, is Steve Jobs’ salary usual or unusual? (Check your spelling!)28. Find the percentile of the indicated data value.14, 14, 49, 28, 14, 35, 56, 63, 77, 21, 14, 56, 42, 7, 56Data point 4929. Find the mid-range for the given sample data.30. Use the range rule of thumb to find the standard deviation of the following data. (Round to the nearest tenth)-15,-18,-32,-21,-9,-32,11,231. Find the median for the given sample data.The temperatures (in degrees Fahrenheit) in different cities on New Year’s Day are listed below.32. The manager of a bank recorded the amount of time each customer spent waiting in line during peak business hours one Monday. The frequency distribution below summarizes the results. Find the mean waiting time. (Round your answer to one decimal place)Waiting time (minutes) Number of customers0-3 24- 7 48-11 634. Use the data to create a stem-plot.The attendance counts for this season’s basketball games are listed below.227 239 215 219221 233 229 233235 228 245 23135. At one college,GPA’sare normally distributed with a mean of 2.9 and a standard deviation of 0.6. Using the empirical rule, the following previously given information with outliers of 4.1 and 1.7would have a percentage of 95%.36. Given the following data values below,classify information as it relates to the type ofmode it might be.(Check your spelling!)70, 56, 48, 48, 53, 52, 66, 48, 36, 4928, 35, 58, 62, 45, 60, 38, 73, 45, 5156, 51, 46, 39, 56, 32, 44, 60, 51, 4463, 50, 46, 69, 53, 70, 33, 54, 55, 5237. The following frequency distribution analyzes the scores on a math test. Find the class midpoint ofscores interval 40-59.Scores Number of Students40 – 59 260-75 476-82 683-94 1595-99 538. Find the standard deviation for the given sample data. (Round results where necessary)39. Andrew asked seven of his friends how many cousins they had. The results are listed below. Find the mean number of cousins.42. The following frequency distribution analyzes the scores on a math test. Find the class boundaries of scores interval 83-94.Scores Number of Students40 – 59 260-75 476-82 683-94 1595-99 543. The following data below represents the recordhigh temperaturesfor all 50 states.112,100, 127, 120, 134, 118, 105, 110, 109, 112, 110, 118, 117, 116, 118, 122, 114, 114, 105, 109, 107, 112, 114, 115, 118, 117, 118, 122, 106, 110, 116, 108, 110, 121, 113, 120, 119, 111, 104, 111, 120, 113, 120, 117, 105, 110, 118, 112, 114, 114You are are asked to construct a frequency distribution to represent the data.It it ismadeknown to you thatyour frequency distribution must have 7classes. With that being said, what is the relative frequency of the 5th class?44.Blood platelet counts of women have a bell-shaped distribution with a mean of 280 and a standard deviation 65. Use the empirical rule to determine what percentage of women have blood platelets between 150 and 410.(Type answer in as a percent)45. Use the range rule thumb to estimate the standard deviation.The race speeds for the top eight cars in a 200-mile race are listed below.185.9, 179.5, 189.2, 176.7, 175.6, 188.7, 186.3, 177.9, 190.246. Find the mode(s) for the given sample data.48. The following data below represents the recordhigh temperaturesfor all 50 states.112,114, 127, 120, 134, 118, 105, 110, 109, 112, 110, 118, 114, 116, 118, 122, 114, 114, 105, 109, 107, 112, 114, 115, 118, 117, 118, 122, 106, 114, 116, 108, 110, 121, 113, 120, 119, 111, 114, 111, 120, 113, 120, 117, 105, 110, 118, 112, 114, 114Which data point has the most leaves?49. True or False:According the empirical rule, if all values falls within 2 standard deviations of the mean, then that would relate to 68% of those values falling within the mean.50. Use the given table below to find the standard devation.(Round to the nearest tenth)Ages of Best ActorWhen Oscar Was won Frequency20-29 130-39 2640-49 3550-59 1360-69 670-79 1MathStatistics and ProbabilitySTA 2023Share Question
