Maurice Tutor

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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 03 Feb 2018 My Price 8.00

SRS from the population

Student study times. Exercise 14.19 (page 365) describes a class survey in which students claimed to study an average of minutes on a typical weeknight. Regard these students as an SRS from the population of all first-year students at this university. Does the study give good evidence that students claim to study less than 2 hours per night on the average?

(a) State null and alternative hypotheses in terms of the mean study time in minutes for the population. (b) What is the value of the test statistic z?

(c) What is the P-value of the test? Can you conclude that students do claim to study less than 2 hours per weeknight on the average?

Exercise 14.19

You use software to carry out a test of significance. The program tells you that the P-value is P =0.031. You conclude

(a) that the probability, computed assuming that H0 is true, that the test statistic would take a value as extreme or more extreme than that actually observed is 0.031.

(b) that the probability, computed assuming that H0 is true, that the test statistic would take a value as extreme or less extreme than that actually observed is 0.031.

(c) that the probability, computed assuming that H0 is false, that the test statistic would take a value as extreme or more extreme than that actually observed is 0.031.

 

Answers

Maurice Tutor
(5)
Status NEW Posted 03 Feb 2018 11:02 PM My Price 8.00

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