Consider the following hypothesis test :

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Target Exam

CUET

Subject

-- Mathematics - Section B2

Chapter

Probability Distributions

Question:

Consider the following hypothesis test :

$H_0 : \mu ≤20$

$H_a : \mu > 20 $

A sample of 49 provided a sample mean of 19.40. The population standard deviation is 2. The value of the test statistic is :

Options:

-1.5

-2.1

1.5

-2.3

Correct Answer:

-2.1