C 00025 pvalue 0001 reject Ho E None of aboveSolutionFormul

C.) 0.0025< p-value < 0.001, reject Ho

E.) None of above

Solution

Formulating the null and alternative hypotheses,              
              
Ho:   u   =   50  
Ha:    u   =/   50  
              
As we can see, this is a    two   tailed test.      
              
Thus, getting the critical z, as alpha =    0.05   ,      
alpha/2 =    0.025          
zcrit =    +/-   1.959963985      
              
Getting the test statistic, as              
              
X = sample mean =    45          
uo = hypothesized mean =    50          
n = sample size =    100          
s = standard deviation =    17.5          
              
Thus, z = (X - uo) * sqrt(n) / s =    -2.857142857          
              
Also, the p value is              
              
p =    0.0042          
              
As P < 0.05, we   REJECT THE NULL HYPOTHESIS.      

Hence

OPTION D.) p-value = 0.0042 and \\alpha=0.05; reject Ho [ANSWER]  

C.) 0.0025< p-value < 0.001, reject Ho E.) None of aboveSolutionFormulating the null and alternative hypotheses, Ho: u = 50 Ha: u =/ 50 As we can see, thi

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