A soft drink dispensing machine must be adjusted if the variance of the contents o² exceeds1.50 ml (ml² = squared milliliter). A random sample of 20 drinks from this machine has a varianceof 1.90 ml².Is it sufficient sample evidence that the machine must be adjusted?Test an appropriate hypothesis at a = 0.05. Assume that the contents dispensed by themachine are approximately normally distributed.a. State null and research hypotheses about population variance o².Ho:H₁b. Find the observed value of test statistic.Keep 3 digits after decimal point in the expression for observed value of test statistics.2The observed value of test statistic is bs.e. State the rejection region.The rejection region is X²c. Insert the word sufficient or insufficient into the following statement.There isbe adjusted._sample evidence to conclude that the machine must11

a. Suppose σ2 is the population variance of the contents of a soft-drink dispensing machine.

Answered: A soft drink dispensing machine must be…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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