Question
In: Statistics and Probability
A company hopes to improve customer satisfaction, setting as a goal less than 5% negative comments....
- A company hopes to improve customer satisfaction, setting as a goal less than 5% negative comments. A random survey of 350 customers found only 10 with complaints. Does this provide evidence that the company has reached its goal?
a). Define the parameter of interest and state the relevant hypotheses.
b). Given a significance level α=0.10, use the p-value method to perform a test. What's your conclusion? Give the procedures in detail and explain the conclusion in the context.
c). Describe the type I error and type II error in this context.
d). Which error might have been made in reaching the conclusion in part (b)?
Solutions
orchestra answered 2 years agoRelated Solutions
A company hopes to improve customer satisfaction, setting as a goal no more than 5% negative...
A company hopes to
improve customer satisfaction, setting as a goal no more than 5%
negative comments. A random survey of 350 customers found only 10
with complaints. Does this provide evidence that the company has
reached its goal of getting less than 5% negative comments?
a) What is the sample
statistic? Use correct notation. Round to three decimal places.
b) Write the null and
alternative hypothesis. (Hint: The null is 5% or 0.05. Also, think
carefully about the inequality...
A company hopes to improve customer satisfaction, setting as a goal no more than 9 %...
A company hopes to improve customer satisfaction, setting as a
goal no more than 9 % negative comments. A random survey of 320
customers found only 15 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...
what would be needed to support a capital acquisition that would improve efficiency, quality, customer satisfaction,...
what would be needed to support a capital acquisition that would
improve efficiency, quality, customer satisfaction, and overall
effectiveness within the organization.
If average revenue is less than average cost there will be a negative cash flow and...
If average revenue is less than average cost there will be a
negative cash flow and the firm will be forced to shutdown. Is this
correct? Why or why not?
Describe how a human resource manager can use goal setting, encouraging creativity, and recognition to improve...
Describe how a human resource manager can use goal setting,
encouraging creativity, and recognition to improve employee
performance.
A short-term financial goal is expected to be accomplished in less than 2 years.
A short-term financial goal is expected to be accomplished in less than 2 years. A long-term financial goal is expected to take more than five years to achieve. Provide an example of a short- term financial goal and a long-term financial goal.
A. Do you think the enthalpy of a methane combustion is more or less negative than...
A. Do you think the enthalpy of a methane combustion is more or
less negative than the enthalpy of a reaction for methanol
combustion? Why?
B. Do you think the enthalpy of an ethanol combustion is more or
less negative than the enthalpy of a reaction for a methanol
combution? Why?
Why is positive feedback much less common than negative feedback in body systems?
Why is positive feedback much less common than negative
feedback in body systems?
To improve worker satisfaction a company institutes an exercise program for its workers. It measures 10...
To improve worker satisfaction a company institutes an exercise
program for its workers. It measures 10 randomly selected workers’
satisfaction levels before and then after the program is
instituted. Does the exercise program significantly improve their
worker's job satisfaction? State the hypotheses, check conditions,
compute test statistics, standardize and give degrees of freedom.
Include a sketch, state the p-value followed by your
conclusion.
Before
34
28
29
45
26
27
24
15
15
27
After
33
36
50
41
37...
To improve worker satisfaction a company institutes an exercise program for its workers. It measures 10...
To improve worker satisfaction a company institutes an exercise
program for its workers. It measures 10 randomly selected workers’
satisfaction levels before and then after the program is
instituted. Does the exercise program significantly improve their
workers job satisfaction? State the hypotheses, check conditions,
compute test statistics, standardize and give degrees of freedom.
Include a sketch, state the p-value followed by your
conclusion.
Before 34 28 29 45 26 27 24 15 15 27
After 33 36 50 41 37...
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