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CUET
-- Mathematics - Section B2
Probability Distributions
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 :
-1.5
-2.1
1.5
-2.3
