b. The age of employees at one of the company are given below. Age Number Employees 20 – 24 3 25 – 29 7 30 – 34 19 35 – 39 33 40 – 44 50 45 – 49 39 50 – 54 37 55 – 59 11 60 – 64 10 Calculate the average age, mode and median age
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- The following data are for the throughput, as measured by the number of wafer lots produced per day by different operators (A, B, C, and D) on different machines (each operator used each machine on two different days): Eighty-four working days were needed to collect the data. The numbers in parentheses refer to the days on which the results were obtained. For example, on the first day, operator A produced 17 lots using machine 2, and on the 84th day, operator A produced 18 lots using machine 5. On some days (such as the third day), more than one item of data was collected, and on other days (such as day 40), no data was collected. Analyze the data, stating all assumptions and conclusions.A random sample of 60 men is selected and classified according drinking water and physical activity lifestyle (Habit). Are water and physical activity Habits independent for this group. use a= 0.01, and calc.X^2= 57.25 and X^2 critical =88.379)At a meeting of information systems for regional offices of a national company, a survey was taken to determine the number of employees the officers supervise in the operation of their departments, where X is the number of employees overseen by each information systems officer. Table X_____________________ Frequency 1 _____________________7 2 _____________________5 3 _____________________11 4 _____________________8 5 _____________________9 Referring to the Table above, how many regional officers are represented in the survey results?
- Suppose that a customer is purchasing a car. He conducts an experiment in which he puts 10 gallons of gas in the car and drives it until it runs out of gas. He conducts this experiment 15 times on each car and records the number of miles driven. Full data set Car 1 216 243 205 242 239 297 295 172 270 251 165 310 265 316 278 Car 2 231 220 223 205 245 257 242 292 248 252 287 255 250 293 251 Median for Car 2 M=___________mi / 10 gal (Type an integer or decimal rounded to one decimal place as needed.) Range for Car 1 R=__________mi / 10 gal (Type an integer or decimal rounded to one decimal place as needed.) Range for Car 2 R=__________mi / 10 gal (Type an integer or decimal rounded to one decimal place as needed.) Sample standard deviation for Car 1 s=_________mi / 10 gal (Type an integer or decimal rounded to one decimal place as needed.) Sample standard deviation…The file contains the amount that a sample of nine customers spent for lunch ($) at a fast-food restaurant: 4.20 5.03 5.86 6.45 7.38 7.54 8.46 8.47 9.87 d. Compute for the rangeConsider the stem and leaf diagram below showing the numerical grade awarded (out of 350) to the students Stem-and Leaf of GradeAwarded N = z Leaf Unit = 10 5 0 12223 14 0 44555588 y 1 0001122233 (x) 1 55555556667889 12 2 12 2 666677777 3 3 234 What is the value of y
- The population of a certain city is shown in the following table during 1910 to 1950.Year 1910 1920 1930 1940 1950Population (in thousands) 23 45 30 48 60 Find the population increase betweenI. 1918 to 1920II. 1932 to 1936III. 1947 to 1950The national distribution of fatal work injuries in a country is shown in the table to the right under National %. You believe that the distribution of fatal work injuries is different in the western part of the country and randomly select 6231 fatal work injuries occurring in that region. At α=0.05 can you conclude that the distribution of fatal work injuries in the west is different from the national distribution? Complete parts a through d below. Cause National % Western Frequency Transportation 44% 2887 Equipment 18% 1158 Assaults 15% 804 Falls 13% 752 Harmful fumes 8% 535 Fires 2% 95 a. State H0 and Ha and identify the claim. What is the null hypothesis, H0? How do I set this whole problem up to get the correct answers?The file contains the amount that a sample of nine customers spent for lunch ($) at a fast-food restaurant: 4.20 5.03 5.86 6.45 7.38 7.54 8.46 8.47 9.87 e. Compute for coefficient of variation
- For unemployed persons in the United States, the average number of months ofunemployment at the end of December 2009 was approximately seven months(Bureau of Labor Statistics, January 2010). Suppose the following data are for aparticular region in upstate New York. The values in the first column show thenumber of months unemployed and the values in the second column show thecorresponding number of unemployed persons.MonthsUnemployedNumberUnemployed1 10292 16863 22694 26755 34876 46527 41458 35879 2325 10 1120Let x be a random variable indicating the number of months a person is unemployed.a. Use the data to develop an empirical discrete probability distribution for x.b. Show that your probability distribution satisfies the conditions for a validdiscrete probability distribution.c. What is the probability that a person is unemployed for two months or less?Unemployed for more than two months?d. What is the probability that a person is unemployed for more than sixmonths?Fill the chi square for Cross 1 and Cross 2 from the following data in the attached image: Cross 1: Phenotypes Ratio Observed Expected (O-E)2/E Totals X2 = Cross 2: Phenotypes Ratio Observed Expected (O-E)2/E Totals X2 =At a meeting of information systems for regional offices of a national company, a survey was taken to determine the number of employees the officers supervise in the operation of their departments, where X is the number of employees overseen by each information systems officer. Table X_____________________ Frequency 1 _____________________7 2 _____________________5 3 _____________________11 4 _____________________8 5 _____________________9 Referring to the Table above, across all of the regional offices, how many total employees were supervised by those surveyed?
