A company hopes to improve customer satisfaction, setting as a goal no more than 10% negative...
A company hopes to improve customer satisfaction, setting as a goal no more than 10% negative comments. A random survey of 360 customers found only 14 with complaints.
a) Create a two-sided 95% confidence interval for the true level of dissatisfaction among customers.
b) Does this provide evidence that the company has reached its goal? Using your confidence interval, test an appropriate hypothesis and state your conclusion.
a) The 95% confidence interval for the true level of dissatisfaction among customers is left parenthesis nothing comma nothing right parenthesis,.
(Round to three decimal places as needed.)
b) What are the null and alternative hypotheses?
H0:p vs. HA:p (Type integers or decimals. Do not round.)
Use the confidence interval in part a to draw a conclusion.
There ______ evidence that the true level of dissatisfaction among customers is less than ___% because ______ is ______ of the interval.
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A company hopes to improve customer satisfaction, setting as a
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