Question

In: Statistics and Probability

The following data give the total food expenditures (in dollars) for the past one month for...

The following data give the total food expenditures (in dollars) for the past one month for a sample of 20 families.

1122, 540, 1228, 594, 422, 873, 1490, 686, 1287, 1179, 945, 1125, 725, 1074, 946, 1650, 1051, 2119, 1345, 445,

a. Calculate the values of the three quartiles and the interquartile range.

Q1 =

Q2 =

Q3 =

IQR =

b. Find the approximate value of the 57th percentile.

c. Calculate the percentile rank of 1051. %

Expert Solution

a) From the given data

Q2 or Median:

IQR = ( Q3 - Q1 ) = 1272.25 - 695.75 = 576.5

b) 57% percentile:

c)

orchestra answered 2 years ago

Frazier Manufacturing Company collected the following production data for the past month: Units Produced Total Cost...

Frazier Manufacturing Company collected the following production data for the past month: Units Produced Total Cost 1,600 $66,000 1,300 57,000 1,500 67,500 1,100 49,500 If the high-low method is used, what is the monthly total cost equation? A. Total cost = $0 + $45/unit B. Total cost = $13,200 + $33/unit C. Total cost = $16,500 + $30/unit D. Total cost = $9,900 + $36/unit I know the answer is $13,200+33/unit. But I do not see how the math is...

The following data gives the monthly sales (in thousands of dollars) for different advertising expenditures (also...

The following data gives the monthly sales (in thousands of dollars) for different advertising expenditures (also in thousands of dollars) and sales commission percentages. Sales 245 138 352 322 228 275 560 366 Advertising 16.5 18.0 22.3 18.4 19.0 19.5 30.0 18.6 Commission 10.5 2.0 4.0 3.5 4.5 1.8 9.0 8.5 What amount of sales would...

Data on advertising expenditures and revenue (in thousands of dollars) for the Four Seasons Restaurant follow....

Data on advertising expenditures and revenue (in thousands of dollars) for the Four Seasons Restaurant follow. Advertising Expenditures Revenue 1 20 2 33 4 44 6 40 10 52 14 53 20 54 a. Let X equal advertising expenditures and Y equal revenue. Complete the estimated regression equation below (to 2 decimals). y =( )+( )x b. Compute the following (to 1 decimal). SSE ( ) SST ( ) SSR ( )MSR ( ) MSE ( ) c. Test whether...

What is the total amount of healthcare expenditures in the US? Provide a specific amount in dollars and percentage with respect to GDP.

What is the total amount of healthcare expenditures in the US? Provide a specific amount in dollars and percentage with respect to GDP. During the first part of the semester we have spent a great deal of time reviewing general concepts of economics to build the foundation to understand specific issues of the healthcare sector. What general economic assumptions do not apply to healthcare? Explain why. Define the concept of adverse selection and explain why it is important in...

The monthly expenditures on food by single adults living in one neighborhood of Los Angeles are...

The monthly expenditures on food by single adults living in one neighborhood of Los Angeles are normally distributed with a mean of $410 and a standard deviation of $75. Determine the percentage of samples of size 9 that have mean expenditures within $20 of the population mean expenditure of $410.

Consider the following data for a hypothetical country for 2015. Total (Billions of Dollars) Consumption 12,268...

Consider the following data for a hypothetical country for 2015. Total (Billions of Dollars) Consumption 12,268 Investment 3,018 Government Purchases 3,184 Net Exports -532 1. What is the GDP for 2015? 2. What percentage of GDP is Consumption? 3. If the population is 300 million people what is the GDP per capita in this country?

The following data give the annual incomes (in thousands of dollars) and amounts (in thousands of dollars) of life insurance policies for eight persons.

The following data give the annual incomes (in thousands of dollars) and amounts (in thousands of dollars) of life insurance policies for eight persons.(a) At the 98% confidence level, test whether annual income and the amount of life insurance policies are independent.(b) Find the attained significance level.(c) State any assumptions you have made in solving the problem.

Island Enterprises has presented the following information for the past eight months operations: Month Units Total...

Island Enterprises has presented the following information for the past eight months operations: Month Units Total Cost April 4,700 $ 18,400 May 3,900 $ 16,300 June 2,100 $ 12,500 July 3,500 $ 14,600 August 4,200 $ 17,400 September 4,900 $ 20,760 October 4,600 $ 17,900 November 4,100 $ 17,100 a. Using the high-low method, calculate the fixed cost per month and variable cost per unit. (Round variable cost to 2 decimal places.) Fixed Cost _______ Per Month Variable Cost _______...

Price (dollars per ride) (1) Quantity demanded (rides per month) (2) Total cost (dollars per...

Price (dollars per ride) (1) Quantity demanded (rides per month) (2) Total cost (dollars per month) (3) 220 0 80 200 1 160 180 2 260 160 3 380 140 4 520 120 5 680 Suppose you own Hot Air Balloon Rides during a local sports event in Vancouver, Canada, which is a singleprice monopoly (see Figure 1). Columns 1 and 2 of the following table set out the market demand schedule and columns 2 and 3 set out...

V. The following data give the annual salaries (in thousand dollars) of 20 randomly selected health...

V. The following data give the annual salaries (in thousand dollars) of 20 randomly selected health care workers. 50 71 57 39 45 64 38 53 35 62 74 40 67 44 77 61 58 55 64 59 Prepare a box-and-whisker plot. Is the data set skewed in any direction? If yes, is it skewed to the right or to the left? Does this data set contain any outliers?