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1 fifteen shoppers are asked to participate in a taste test of four soft drinks at the local supermarket nine of them
your friend reads in the paper about professor diaconiss conclusion that the chance of someone winning two state
you are a person-in-the-street interviewer for a radio station suppose that your population consists of those who come
in recent years shopping malls have become a favorite site for companies to test consumers responses to new products
consider the scores in data 2a of problem 8 in chapter 2 using the table of random numbers table c in appendix d and
1 given a normally distributed population with 150 and 24 if samples of size 36 are drawn at random what is the
the wechsler adult intelligence scale is standardized to have a mean of 100 and a standard deviation ofif we draw a
1 why is it inadequate to choose a one-tailed test on the basis that we expect the outcome to be in that direction2 in
mr ratigan wishes to compare the performance of first-grade students in his district with the national norm of 100 on a
another regression equation reads y 25x 5a could the x and y scores to which this equation refers be in standardscore
1 another regression equation reads y 3x is that possible explain2 another regression equation reads y 12 state all the
1 for the data used as an example in section 84 the equation for predicting sat total score x from gpa y is x 98y
someone proposes a hothouse treatment for gifted children four-year-olds are tested and those whose iqs appear to be
in one company it is found that the frequency of accidents correlates about40 from one year to the next the company
the correlation between sociability and impulsiveness is about 6 among college studentsa in a large sample of college
for the relationship between sat score and freshman-year gpa see section 84a what is the coefficient of non
an instructor gives a 100-item multiple choice examination each question has four alternatives if the student knows
1 you toss a fair coin and roll an honest die what is the probability of getting a head in combination with a 42 from a
from a deck of 52 cards 2 cards are drawn at random but you do not replace the first card before drawing the second
over the 365 days of any year in any major city the greater the quantity of ice cream sold the greater the number of
1 does a low value of r between two variables necessarily indicate that there is very little association between them
1 among a group of mentally handicapped 10-year-old children it is found that the correlation between iq and reading
one way to learn whether an aptitude test works is to test applicants for the particular job hire them all and
for which group would you expect a higher correlation between height and weight all students at a 4-year high school or
1 under what two circumstances is the prediction of y from x better made from the regression equation than from the