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StatisticsQ&A Libraryin 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$63Question

Asked Nov 18, 2019

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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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