(a) Show that it is appropriate to carry out a chi-square test using these data. Each expected value is 2 ....

Grade points are assigned such that an A receives 4 points, a B receives 3 points, a C receives 2 points, a D receives 1 point, and a F receives 0 points. Grades are weighted according to credit hours (units). If a student receives an A in a four-unit class, a D in a two-unit class, a B in a three-unit class and a C in a three-unit class, what is the student's grade point average? O A. 2.75 O B. 1.75 O C. 3.00 O D. 2.50 Click to select your answer. DELL XXX EVD disc RW DELL

C6. Let's continue our analysis of offenders and victims of violent crime. In the following table, U.S. Department of Justice 2011 data for the sex of offenders and the sex of victims are reported. Sex of Offender Sex of Victim Male Female Male 3,760 450 Female 1,590 140 Source: U.S. Department of Justice, Expanded Homicide Data, Table 6, 2011.

A travel agency is interested in comparing the travel experiences of customers travelling on two airlines: Airline A and Airline B. They do not know the exact route taken by each airline. The travel agency would like to know if there is a difference in the population mean travel time on a direct flight from Saskatoon to Toronto, depending on the airline a traveler chooses to fly. They recruit 10 employees who are asked to fly direct from Saskatoon to Toronto on Airline A. Each employee is asked to record the amount of time spent in the air. The times recorded by the employees are provided below (in hours). The population mean time for Airline B to fly from Saskatoon to Toronto is 3.4 hours. Conduct an appropriate hypothesis test using the critical value method.   Employee 1 2 3 4 5 6 7 8 9 10 Time 3.25 3.75 2.50 3.75 2.75 4.5 4.25 4.5 3.75 3.25

The following table gives the state taxes (in dollars) on a pack of cigarettes for nine states as of April 1, 2009.   State State Tax (in dollars) Alaska 2.00   Iowa 1.36   Massachusetts 2.51   Missouri 0.17   New Hampshire 1.33   New York 2.75   Ohio 1.25   South Carolina 0.07   West Virginia 0.55     How many observations are in this data set?

Reliable Furniture is a family business that has been selling to retail customers in the Oakville area for many years. It advertises extensively on radio and TV, emphasizing their its prices and easy credit terms. The owner would like to review the relationship between sales and the amount spent on advertising. Below is information on sales and advertising expense for the last four months.   Ad Exp. Sales Rev. Month ($ in 000) ($ in 000) July 2 7 August 1 3 September 3 8 October 4 10   G-9 B continued Questions from G-9   e)      Reproduce the excel output manually. f)      Interpret the strength of the correlation coefficient. g)       Determine the coefficient of determination. Interpret. h)      Test the significance of the Coefficient of Correlation i)      Test the significance of the slope coefficients of the regression equation.

An experienced census official feels that she can accurately estimate the number of inhabitants of a city block by simply noting the size of the block and the types of buildings (single family homes, apartments, businesses, etc.) that are found on the block. This procedure, if accurate, would be much quicker and cheaper than visiting each residence and taking a survey of its inhabitants. The data below are estimates of block populations provided by the official for 10 blocks in a large city, and the actual numbers of inhabitants for the same 10 blocks. Estimate 211 160 Actual Inhabitants of City Blocks 145 97 165 145 90 180 210 220 125 200 110 95 180 200 225 130 210 60 Copy Data Step 1 of 2: Find the value of the test statistic for testing whether there is a linear relationship between the actual number of inhabitants and the estimated number. Round your answer to two decimal places, if necessary.