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Question: A previous problem discussed the College Board changing the SAT test between 2005 and 2006. The class of 2005 was the last to take the former version of the SAT featuring math and verbal sections. The file titled Math SAT contains the math SAT scores for the interval 1967 to 2005. One point of interest concerning the data is the relationship between the average scores of male and female students.
a. Produce a scatter plot depicting the relationship between the average math SAT score of males (the dependent variable) and females (independent variable) over the period 1967 to 2005. Describe the relationship between these two variables.
b. Is there a linear relationship between the average score for males and females over the period 1967 to 2005? Use a significance level of 0.05 and the p-value approach to determine this.
At a fair run by a local charity organization, it costs 50 cents to try one's luck in drawing an ace from a deck of 52 playing cards. What is the expected profit per customer
suppose we have a sample of 245 patients who have undergone gastric bypass surgery. their average weight loss 6 months
Is there a difference in preference? State appropriate hypotheses and carry out a matched pairs t test for these data.
a pew internet and american life project 2007 report stated that 74 of teenage boys posted their photo on their online
Describe an experimental design that would require a matched-pairs t procedure to analyze the results.- Describe an experimental design that would require an independent sample procedure to analyze the results.
Represent (X,Y) as a function of (U,V). Find the joint density f(u,v) for (U,V) (Hint: take into account the region where it is non-zero). Calculate f(1,0) and input it as the answer.
Translate the following statements into symbolic form using capital letters to represent affirmative English statements.- If banks charge fees for teller-assisted transactions, then more people will use ATMs;
Produce a frequency distribution for these data. Convert the frequency distribution into a probability distribution using the relative frequency assessment.
A baseball player hits 59 home runs during a season with 161 games. What is the empirical probability that the player would hit at least one home run during any given game of the season?
In a statewide competitive examination for engineering admission, the register number allotted to the candidates is of the form CCNNNN.
fuel economy estimates for automobiles built one year predicted a mean of 25.8 mpg and a standard deviation of 7.2 mpg
I deal myself 5 cards from a standard 52-card deck. Find the probabilities of 2 of a kind; 3 of a kind; -a full house.
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