Evaluation

Evaluation using hypothesis

Since we have render size of n=100 which is greater than 30 indeed we opt for Z test for testing the hypothesis.
p=no. of favorable responses/sample size
^?p=?P(1-P)/n-1
CV=P+Z* ^?p
?=5% Z=1.96

1. H0: less than 70% of customers ar satisfied with the tariff plan.
H1: much than 70% of customers are satisfied with the tariff plan.
p=78/100=0.78
H0: P<=0.7
H1: P>0.7
^?p=?P(1-P)/n-1
^?p=?0.7(1-0.7)/100-1=?0.21/99=0.046
CV=P+Z* ^?p
Cv=0.7+1.96(0.046)=0.79
Since p=0.78<CV=0.79 thus reject H1 and accept H0
Therefore less than 70% are satisfied with the tariff plans of idea telecom.

2. H0: less than 90% of customers are satisfied with the after sales service.
H1: more than 90% of customers are satisfied with the after sales service.
p=61/100=0.61
H0: P<=0.9
H1: P>0.9
^?p=?P(1-P)/n-1
^?p=?0.9(1-0.9)/100-1=?0.09/99=0.030
CV=P+Z* ^?p
Cv=0.9+1.96(0.030)=0.95
Since p=0.61<CV=0.



95 thus accept H0 and reject H1
Therefore less than 90% are satisfied with after sales service of cerebration telecom.

3. H0: less than 70% of customers are satisfied with the network.
H1: more than 70% of customers are satisfied with the network.
p=62/100=0.62
H0: P<=0.7
H1: P>0.7
^?p=?P(1-P)/n-1
^?p=?0.7(1-0.7)/100-1=?0.21/99=0.046
CV=P+Z* ^?p
Cv=0.7+1.96(0.046)=0.79
Since p=0.62<CV=0.79 thus accept H0 and reject H1
Therefore less than 70% are satisfied with network of idea telecom.

4. H0: less than 30% of customers are loyal.
H1: more than...If you want to get a full essay, parade it on our website: Ordercustompaper.com



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