In each of the following situations a hypothesis test for a, Ask an Expert

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"In each of the following situations, a hypothesis test for a population mean is needed. For each situation select the correct choice of the null hypothesis H0 and the alternative hypothesis Ha.

Situation 1. Experiments on learning in animals sometimes measure how long it takes a mouse to find its way through a maze. The mean time is 18 seconds for one particular maze. A researcher thinks that a loud noise will cause the mice to complete the maze faster. She measures how long each of 10 mice takes with a noise as stimulus.

Choose the correct null hypothesis H0 and alternative hypothesis Ha from the choices below.

a) H0: μ = 18; Ha: μ < 18.
b) H0: μ = 18; Ha: μ > 18.
c) H0: y = 18; Ha: y < 18.
d) H0: y = 18; Ha: y > 18.
e) H0: μ = y; Ha: μ < y.
f) H0: y = 18; Ha: y ≠ 18.
g) H0: μ = 18; Ha: μ ≠ 18.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9439475

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