# in october, the campus bookstore asked a random set of freshman and seniors how much they had spent on text books that semester. the bookstore believes that the two groups spent the same amount. what is an appropiate test value for a z test. A). 1.21    B). 0.22    C). 2.10    d).9.51 freshmenseniorssample size8070sample mean\$460\$440population Std. dev.\$52\$63

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in october, the campus bookstore asked a random set of freshman and seniors how much they had spent on text books that semester. the bookstore believes that the two groups spent the same amount. what is an appropiate test value for a z test.

A). 1.21    B). 0.22    C). 2.10    d).9.51

 freshmen seniors sample size 80 70 sample mean \$460 \$440 population Std. dev. \$52 \$63

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