EBK BUSINESS STATISTICS
7th Edition
ISBN: 9780134462783
Author: STEPHAN
Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)
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Example 5
The highlights of the Railway budget for 1983-84 are as follows. The actual
gross traffic receipts for 1981-82 was Rs. 3,538.24 crores. The Budget Estimates for
1982-83 in regard to Gross traffic receipts was Rs. 4,171.8 crores and the revised
Budget Estimate for 1982-83 for the above item is Rs. 4,375.79 crores respectively.
Whereas the budget estimates for 1983-84 for Gross traffic receipts is Rs. 5,343.63
crores, the actual total working expenses and the net railway revenue for 1981-82
were Rs. 3,182.05 crores and Rs. 403.1 crores respectively. The Budget Estimates
and Revised Budget Estimates for 1982-83 in respect of total working expenses are
Rs. 3,700.90 crores and Rs. 3,892.28 crores respectively. Whereas the corresponding
estimates for 1982-83 in respect of net-railway revenue are Rs. 510.91 crores and
Rs. 533.4 crores respectively, the estimated budget on total working expenses and
net railway revenue for 1983-84 exceed the actuals for 1981-82 by Rs. 1,338.72
crores…
According to the CDC, cholesterol levels can be reduced by following a healthy diet, getting regular exercise, and reducing the amount of alcohol consumed on a weekly basis. One method of monitoring overall cholesterol levels is to calculate your cholesterol ratio (LDL/HDL), in general a cholesterol ratio between 3.5 and 5.0 is considered to be healthy for most adults. Suppose you are a clinical researcher testing the effects of these lifestyle changes on patient cholesterol levels. In order to determine if following these guidelines helps to reduce overall cholesterol, a total of 18 participants (N = 18) with moderate to high cholesterol ratios (i.e., 3.91 to > 5.0) were recruited for a healthy lifestyle study and their cholesterol ratio was calculated three times over a six week period: Week 0 (baseline), Week 3, and Week 6. Using the variables "Week 0", "Week 3", and "Week 6" in the data set, conduct a One-Way, Within Subjects (AKA Repeated Measures) ANOVA, at α = 0.05, to see…
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- Find the equation of the regression line for the following data set. x 1 2 3 y 0 3 4arrow_forwardAccording to the CDC, cholesterol levels can be reduced by following a healthy diet, getting regular exercise, and reducing the amount of alcohol consumed on a weekly basis. One method of monitoring overall cholesterol levels is to calculate your cholesterol ratio (LDL/HDL), in general a cholesterol ratio between 3.5 and 5.0 is considered to be healthy for most adults. Suppose you are a clinical researcher testing the effects of these lifestyle changes on patient cholesterol levels. In order to determine if following these guidelines helps to reduce overall cholesterol, a total of 18 participants (N = 18) with moderate to high cholesterol ratios (i.e., 3.91 to > 5.0) were recruited for a healthy lifestyle study and their cholesterol ratio was calculated three times over a six week period: Week 0 (baseline), Week 3, and Week 6. Using the variables "Week 0", "Week 3", and "Week 6" in the data set, conduct a One-Way, Within Subjects (AKA Repeated Measures) ANOVA, at α = 0.05, to see…arrow_forwardAccording to the CDC, cholesterol levels can be reduced by following a healthy diet, getting regular exercise, and reducing the amount of alcohol consumed on a weekly basis. One method of monitoring overall cholesterol levels is to calculate your cholesterol ratio (LDL/HDL), in general a cholesterol ratio between 3.5 and 5.0 is considered to be healthy for most adults. Suppose you are a clinical researcher testing the effects of these lifestyle changes on patient cholesterol levels. In order to determine if following these guidelines helps to reduce overall cholesterol, a total of 18 participants (N = 18) with moderate to high cholesterol ratios (i.e., 3.91 to > 5.0) were recruited for a healthy lifestyle study and their cholesterol ratio was calculated three times over a six week period: Week 0 (baseline), Week 3, and Week 6. Using the variables "Week 0", "Week 3", and "Week 6" in the data set, conduct a One-Way, Within Subjects (AKA Repeated Measures) ANOVA, at α = 0.05, to see…arrow_forward
- How to how to interpret scatterplots?arrow_forwardThe analysis of the results of a budget survey of 150 families gave an average monthly expenditure of Rs. 120 on food items with a S.D. of Rs. 15. After the analysis was completed it was noticed that the figure recorded for one household was wrongly taken as Rs. 15 instead of Rs. 105. Determine the correct value of the average expenditure and its S.D.arrow_forwardBurning fuels in power plants and motor vehicles emits carbon dioxide (CO2), which contributes to global warming. The CO2 emissions (metric tons per capita) for countries varies from 0.02 in Burundi to 44.02 in Qatar. Although the data set includes 214 countries, the CO2 emissions of 15 countries are not available on the World Bank database. The data set is too large to display but the data for the first five countries is given. Use the full data set with data on the 214 countries to answer the questions. To access the complete data set, click the link for your preferred software format: Excel Minitab JMP SPSS TI R Mac-TXT PC-TXT CSV Crunchlt! Country CO2 Emissions (Metric Tons per Capita) Aruba 23.92 Andorra 5.97 Afghanistan 0.43 Angola 1.35 Albania 1.61 Find the mean and the median for the full data set. Round your answers to three decimal places. The mean for these data is tons per person The median for these data is tons per personarrow_forward
- Development of Version 2.0 of a particular accounting software product is being considered by Jose Noguera's technology firm in Baton Rouge. The activities necessary for the completion of this project are listed in the following table: Normal Crash Activity Time (weeks) Time (weeks) A B C D E F G 4 2 3 8 6 3 4 3 1 3 4 3 2 2 a) Based on the given information regarding the activities for the project, the project length = Normal Cost $2,000 $2,100 $500 $2,300 $800 $3,200 $1,500 weeks. Total Cost with Crashing Immediate Predecessor(s). $2,650 $2,900 $500 $2,600 $1,100 $4,600 $2,100 A B C D, Earrow_forwardAs humans we consume food. The body extracts good things such as proteins and vitamins and throws away waste. A typical waste product is a uric acid. High levels of uric acid can be an indication of conditions such as gout, kidney disease, and cancer. For females a high level of uric acid is 6 mg/dL or more and for males a high level of uric acid is 7 mg/dL or more. Suppose, over a period of months, an adult female has taken 8 blood test for uric acid. The results of the test are shown below. results 8.9 6.27 3.99 7.42 9.94 8.99 9.17 5.65 Find a 95% confidence interval for the population mean of uric acid in this adult female's blood. (Round your answers to two decimal places.)margin of error mg/dL lower limit mg/dL upper limit mg/dL Does this confidence interval suggest that this adult female has a high level of uric acid? Explain your answer.arrow_forwardPeter Thompson, in charge of office supplies at Top Hill Estates., would like to predict the quantity of paper used in the office photocopying machines per month. He believes that the number of clients seen in a month influences the volume of photocopying performed. He has compiled the following recent monthly data: (You are to use Excel for this problem) Number of clients in a Month Sheets of Photocopy Paper Used (1000's) 40 26 50 54 40 23 34 52 24 12 25 26 22 15 22 26 a. Develop the least squares estimated regression equation that relates sheets of photocopy paper used to the number of clients. b. Use the regression equation developed in part (a) to forecast the amount of paper used in a month when 36 clients are expected. c. Compute SSE, SST, and SSR.arrow_forward
- Assuming an M/M/1 system setup with a service rate of 25 entities per hour and an idling ratioof 4% Define the system’s birth rate. Define at least two ways of arriving at the number of entities in the system. Define the ratio of the time an entity spends waiting and the time the entity spends in thesystem?arrow_forwardAs humans we consume food. The body extracts good things such as proteins and vitamins and throws away waste. A typical waste product is uric acid. High levels of uric acid can be an indication of conditions such as gout, kidney disease, and cancer. For females a high level of uric acid is 6 mg/dL or more and for males a high level of uric acid is 7 mg/dL or more. Suppose, over a period of months, an adult male was given 6 blood tests for uric acid. The results of each blood test are shown below. results 9.48 11.1 8.58 11.4 10.34 11.58 The distribution of uric acid in healthy adult males is normally distributed with known population standard deviation, σ=1.94σ=1.94 mg/dl.Find a 95% confidence interval for the population mean of uric acid in this adult male's blood. Assume the sample of blood tests were given in a way that's equivalent to a simple random sample. (Round your answers to two decimal places.)margin of error __ mg/dL lower limit ___ mg/dL upper limit ___ mg/dLarrow_forwardAs humans we consume food. The body extracts good things such as proteins and vitamins and throws away waste. A typical waste product is uric acid. High levels of uric acid can be an indication of conditions such as gout, kidney disease, and cancer. For females a high level of uric acid is 6 mg/dL or more and for males a high level of uric acid is 7 mg/dL or more. Suppose, over a period of months, an adult female was given 10 blood tests for uric acid. The results of each blood test are shown below. Pisces for Tutoring BVC Student esources results 2.52 4.15 5.91 7.55 7.77 5.4 4.37 3.22 3.48 3.13 hat pogle Drive The distribution of uric acid in healthy adult females is normally distributed with known population standard deviation, o = 2.15 mg/dl. Find a 95% confidence interval for the population mean of uric acid in this adult female's blood. Assume the sample of blood tests were given in a way that's equivalent to a simple random sample. (Round your answers to two decimal places.)…arrow_forward
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