You asked:”Parametric Estimating Homework AssignmentA contracting firm collected data on its previously completed commercial facility construction projects. The data is provided in the embedded Excel worksheet below, with the followingcolumn titles (double-click to access the worksheet):⢠Cost: Actual direct cost in $100,000⢠SqFt: Square footage of the facility in 1,000 square feet⢠LinFtInt: Linear footage […]
From the case study, if you had been a customer at the newly refurbished Downtown Hotel, propose three things that could be done to make you feel safer the next time you stay there. Imagine that you could create the perfect servicescape for a family-style restaurant. Using the elements of temperature, smell, sound, light, color, […]
Suppose that a certain college class contains 49 students. Of these, 26 are juniors, 31 are biology majors, and 6 are neither. A student is selected at random from the class.
In a certain city of several million people, 7.8% of the adults are unemployed. If a random sample of 205 adults in this city is selected, approximate the probability that fewer than 17 in the sample are unemployed. Use the normal approximation to the binomial with a correction for continuity. Round your answer to at […]
Validity True story: I once spoke to a retired professor who used to teach general studies geography. His grading technique was to throw the papers/tests on the ground and randomly assign the same grade to each pile (without even reading the papers/tests). If students were not happy with the grade, they could write a little […]
Suppose that 10% of the population of the U.S. is left-handed. If a
A (hypothetical) study tries to predict a child’s IQ based on their mother’s IQ. The study is summarized as follows: Average mother’s IQ: 120 SD=5 Average child’s IQ:100 SD=15. r=0.7. This is a continuation of the previous question. If you predicted a child’s IQ, without any additional information, it would be__ . Given that the mother’s IQ was 150, you […]
A student left the physics final and complained that the questions on the cumulative final covered only about one quarter of the concepts for the course. The student is suggesting that the test lacks which type of validity? a.Predicitive b.Concurrent c.Content d.Consequential
What does it mean if a researcher makes a Type I error? a.The researcher failed to reject the null hypothesis when it was false. b.The researcher failed to reject the null hypothesis when there was a large probability level. c.The researcher rejected the null hypothesis when it was true. d.The researcher rejected the null hypothesis […]
