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Optimism and LongevityA cancer specialist from the Los Angeles County General Hospital (LACGH) rated patient optimism in 20- to 40-year-old male patients with incurable cancer in 1970. In 1990, the researcher examined hospital records to gather the following data:• Socioeconomic status (1-7 rating of occupation; higher ratings indicate higher levels of SES)• Age in 1970• Optimism in 1970 (1-100 rating, higher scores indicate higher levels of optimism)• Longevity (years lived after the 1970 diagnosis)Using the SPSS data file for Module 7 (located in Topic Materials), calculate a simultaneous multiple regression with SES, age, and optimism as the independent variables and longevity as the dependent variable.1. Do the independent variables correlate statistically significantly and practically with the dependent variable?2. Is collinearity between the independent variables a concern?3. What is the R and adjusted R-square for all independent variables entered simultaneously?4. What variable(s) provide a significant unique contribution(s)?5. Compose a results section for this statistical analysis.
She selected a random sample of 50 students from each of the four dormitories. What is the null hypothesis for this situation?
Suppose that past data are not available for developing a planning value for p; therefore, you will use p = 0.050 for the planning average.
A market analyst for the Weber Refrigerator Company has visited various appliance stores in a city to get data on the selling price of different brands of refrigerators. Estimate the population regression equation and interpret the result
The Bunte Auto Repair Shop received a shipment of four carburetors. One is known to be defective. If two are selected at random and tested.
Calculate all measures of central tendency for data that are interval or ratio in measurement. Calculate the standard deviation for data that are interval or ratio in measurement
In how many ways can a committee of 6 members be selected from out of these 12? Find the probability that a random committee contains all males?
Determine the number of grams of each ingredient that must go into the drug in order to meet the antibiotic requirements at the minimum cost. Formulate a linear programming model for this program.
Lauren Moore has sold her business for $500,000 and wants to invest in condominium units ( which she intends to rent) and land ( which she will lease to a farmer).
Your task is to interview a representative sample of attendees for the large concert venue where you work. The new season includes 200 live concerts featuring all types of musicians and musical groups.
If the weekly salaries are normally distributed, estimate the fraction of employees that make more than $300 per week.
We want to test the hypothesis that the population variances are equal.
Children toilet train (training age normally distributed) at an average of 26 months with a standard deviation of 2 months. How lilely is child to be trained after 30 months?
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