Which answer is right?????
1 answer:
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Answer:
The decision rule is
Reject the null hypothesis
The test statistics is
Step-by-step explanation:
From the question we are told that
The first sample size is
The mean at first deployment is
The standard deviation is
The second sample size is
The mean at second deployment is
The standard deviation is
The null hypothesis is
The alternative hypothesis is
The level of significance is
Generally the degree of freedom is mathematically represented as
=>
=>
Generally the pooled variance is mathematically represented as
=>
=>
Generally the test statistics is mathematically represented as
=>
=>
Generally from the t distribution table the probability corresponding to the t statistics value to the left is
Generally the p -value is mathematically represented as
=>
=>
From the obtained value we see that the hence
The decision rule is
Reject the null hypothesis