Answer:
Option C.
Step-by-step explanation:
Use the biquadratic formula.
Positive sign:
Negative sign:
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2 answers:
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Answer:
Now we can claculate the p value since is a right tailed test would be:
For this case since the p value is lower than the significance level provided we have enough evidence to reject the null hypothesis and we can conclude that hotel chains customers are more satisfied with their service
Step-by-step explanation:
Information given
n=115 represent the random sample selected
X=108 represent the number of people who were satisfied with their service
estimated proportion of people who were satisfied with their service
is the value that we want to test
represent the significance level
z would represent the statistic
represent the p value
System of hypothesis
We want to verify if hotel chains customers are more satisfied with their service.:
Null hypothesis:
Alternative hypothesis:
The statistic for this case is given by:
(1)
Replacing the info given we got:
Now we can claculate the p value since is a right tailed test would be:
For this case since the p value is lower than the significance level provided we have enough evidence to reject the null hypothesis and we can conclude that hotel chains customers are more satisfied with their service