Provide an Appropriate Response $\$ 157$ With a Standard Deviation Of $\$ 38$

question 51

Short Answer

Provide an appropriate response.
-In a random sample of 26 laptop computers, the mean repair cost was $\$ 157$ with a standard deviation of $\$ 38$ . Assume the population has a normal distribution.
a) Construct a $95 \%$ confidence interval for the population mean, $\mu$ .
b) Suppose you did some research on repair costs for laptop computers and found that the standard deviation is $\sigma = 38$ . Use the normal distribution to construct a $95 \%$ confidence interval for the population mean, $\mu$ . Compare the results.

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Definitions:

Explanations

The process of making something clear or understandable, often used to describe how phenomena occur or why they are as they are.

Behaviors

Observable actions or reactions of an individual, often in response to the environment or stimuli.

Groupthink

A psychological phenomenon that occurs within a group of people in which the desire for harmony or conformity in the group results in an irrational or dysfunctional decision-making outcome.

Fundamental Attribution Error

The tendency to overestimate the effect of personality or disposition and underestimate the effect of the situation in explaining social behavior.