Question

2PTwo random samples of sizes 400 and 500 have mean 10.9 and 11.5respectively. Can the samples be regarded as drawn from the samepopulation with variance 25? *calculated value of z=1.78, Null hypothesis accepted at 1% levelO calculated value of z=2.578, Null hypothesis accepted at 1% levelO zcalculated value of z=4.68, Null hypothesis rejected at 1% levelO calculated value of z=5.78, Null hypothesis accepted at 1% level​

Answer 1

Answer:

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