7. Construct a sub-divided bar diagram from the following data, regarding the number of stu- dents in 2 colleges. College Arts Science Commerce Agriculture Total A 1,200 800 600 400 3,000 750 500 300 450 2,000
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- List the sample space of each experiment. Picking a one-digit numberThe number of stories in the 13 tallest buildings for two different cities is listed below. Which set of data is more variable?Accra: 75, 71, 64, 56, 53, 55, 47, 55, 52, 50, 50, 50, 47 Kumasi: 64, 54, 40, 32, 46, 44, 42, 41, 40, 40, 34, 32, 30The Los Angeles City Controller's office calculated that in 2013, the city employed 47030 full-time employees and 10142 part-time employees. Assume that an outside advocacy group had been lobbying the Mayor's office to convert part-time workers into full-time workers throughout 2014. The Controller's office makes its calculations annually. Suppose that the outside advocacy group wanted to know the proportion of city employees (excluding per-event employees) who are full-time employees p in June 2014 to gauge if their lobbying efforts had been effective. Suppose that the group surveyed a random sample of 1000 city employees (excluding per-event employees) in June 2014 and found that 845 were full-time employees and 155 were part-time employees. If the advocacy group planned to use a one-sample z-test for a proportion to test their lobbying eforts, the appropriate null hypothesis would be and the appropriate alternative hypothesis would be
- A survey of the mathematics faculty at wassamatta university indicates that 9 faculty members are registered democrats and 13 are registered republicans. find the ratio of republicans to democats6. A sales manager collected the following data on annual sales for new customer accounts and the number of years of experience for a sample of 10 salespersons. Kindly answer letters A & B1. A reporter from MTL Blog bought 9 roast chickens from Rotisserie Romados. Eachchicken was weighed and yielded the following data (pounds):5.2, 6.3, 5.5, 6.7, 7.0, 6.1, 5.8, 6.5, 5.9
- The price per share of stock for a sample of 25 companies was recorded at the beginning of 2012and then again at the end of the 1st quarter of 2012 (the wall street Journal, April 2, 2012).How stocks perform during the 1st quarter is an indicator of what is ahead for the stock marketand the economy. Use the sample data in the file entitled StockPrices to answer the following.a. Let didenote the change in price per share for company i where di = 1st quarter of 2012price per share minus the beginning of 2012 price per share. Use the sample mean of thesevalues to estimate the dollar amount a share of stock has changed during the 1st quarter9. The number of stories in the 13 tallest buildings for two different cities is listed below. Which set of data is more variable? Accra: 75, 71, 64, 56, 53, 55, 47, 55, 52, 50, 50, 50, 47 Kumasi: 64, 54, 40, 32, 46, 44, 42, 41, 40, 40, 34, 32, 30Explain the Tukey HSD results in the attached table .
- Suppose you want to determine the mean number of cans of soda drunk each month by students in their twenties at your school. Describe a possible sampling method in three to five complete sentences. Make the description detailed.Opposites In a way, boxplots are the opposite of histo-grams. A histogram divides the number line into equal intervals and displays the number of data values in eachinterval. A boxplot divides the data into equal parts anddisplays the portion of the number line each part covers. These two plots display the number of incarcerated pris-oners in each state as of June 2006.a) Explain how you could tell, by looking at a boxplot,where the tallest bars on the histogram would be located.b) Explain how both the boxplot and the histogram canindicate a skewed distribution.c) Identify one feature of the distribution that thehistogram shows but a boxplot does not.d) Identify one feature of the distribution that the boxplotshows but the histogram does not.The highway department wants to estimate the proportion of vehicles on a Toll road at KM 25 between midnight and 5:00 A.M. The department head wanted to see how many 18-wheel tractor trailers passed along the road. These estimates will be used to determine road improvement and construction considerations and in road patrol planning. The department head asked researchers to calculate the estimated vehicles at different locations on the inter-island road over the past 7 days. Of the 3,481 vehicles counted, 927 were 18 wheelers. However, out of a total of 927, there were 74 who had accidents, so the sample was calculated based on the results of reducing the number of accidents. Determine the point estimate for the proportion of vehicles traveling on KM 25 during this time period which are 18 wheelers! (Assume the confidence level is 99%). What is the benefit of estimating the estimated value in this case (analyze the answers you have obtained)?