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Question: Consider these three variables: finishing times in a marathon, number of university dining hall meals eaten in a semester on a three-meal-a-day plan, and scores on a scale of extroversion.
a. Which of these variables is most likely to have a normal distribution? Explain your answer.
b. Which of these variables is most likely to have a positively skewed distribution? Explain your answer, stating the possible contribution of a floor effect.
c. Which of these variables is most likely to have a negatively skewed distribution? Explain your answer, stating the possible contribution of a ceiling effect.
The sum of two numbers is less then 27. The second number is 7 less then the first. What are the possible values for the first and second number
Whenever its service life ends, the tank is intended to be sold to a steel mill as metal scrap for $3000. Using 10% interest rate: Find the capitalized cost of the storage tank investment.
Show that when n = 2, the multiplicative utility function is equivalent to the two- attribute multilinear utility function. (Hint: This is an algebra problem. You must show that one utility function is a scaled version of the other.
An experiment was conducted to compare the effects of two teaching styles for grade 12 mathematics. the individuals in experiment were grade 12 math students from one particular high school.
a person has applied for positions at company a company b and company c. the probability of obtaining an offer from
They were quite comfortable-that was about the median family income in 1975. How much income did they need 28 years later, in 2003.
Debit card purchases are for more than $50. Ms. Tina Stevens just purchased a new dress that cost $120. What is the probability that she paid cash or check?
The nighttime cold medicine Dozenol bears the label indicating the presence of 600 mg of acetaminophen in each fluid ounce of drug.
explain in what sense that percentile ranks and standard scores are similar to one another? be sure to include an
The average age of statistics students nationwide is 22. The standard deviation is 2.5 years. Assume the age is a normally distributed variable. Find the probability that one student selected at random is older than 23.
suppose that you want to test for a difference in proportion between two groups. group 1 has 80 respondents and 40 of
Use the Simple Random Sample applet to select a sample of 2 items from a population that contains the numbers 1, 2, 3, and 4. Repeat the process 20 times and record the number of times that a 3 is selected in the sample.
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