Preliminary Data Analyses Indicate That It Is Reasonable to Use $\bar { x }$

question 30

Essay

Preliminary data analyses indicate that it is reasonable to use a t-test to carry out the specified hypothesis test. Performthe t-test using the critical-value approach.
-In one state, the mean time served in prison by convicted burglars is 18.7 months. A researcher would like to perform a hypothesis test to determine whether the mean amount of time served by convicted burglars in her hometown is different from 18.7 months. She takes a random sample of 11 such cases from court files in her home town and finds that $\bar { x }$ = 21 months and s = 7 months. Use a 5% significance level to perform the test.

Acknowledge the history and scale of the mutual fund industry.

Understand the relationship between investment risk and potential returns.

Recognize the regulatory and informational aspects of mutual funds, including prospectuses, tax reporting, and performance metrics.

Distinguish between mutual funds based on their investment strategies, such as growth, sector, or high-yield bond funds.