A Sample of 30 Year Fixed Mortgage Rates at 12 $\mathbf { C l }$

question 3

Multiple Choice

A sample of 30 year fixed mortgage rates at 12 randomly chosen credit unions yields a mean rate of 6.65 % and a sample standard deviation of 0.38%. A sample of 30 year
Fixed mortgage rates at 16 randomly selected banks yields a mean rate of 7.05% and a
Sample standard deviation of 0.22%. Are the mean rates different between credit unions
And banks? Relevant output is shown below. At the 0.05 level of significance, the
Correct conclusion is Two-Sample T-Test and $\mathbf { C l }$
$\begin{array} { l r r r r } \text { Sample } & \mathbb { N } & \text { Mean } & \text { StDev } & \text { SE Mean } \\ 1 & 12 & 6.650 & 0.390 & 0.11 \\ 2 & 16 & 7.050 & 0.220 & 0.055 \end{array}$
Difference $= m u$ (1) $- \mathrm { mu }$ (2)
Bstimate for difference: $- 0.400$
$95 \%$ CI for difference: $( - 0.666 , - 0.134 )$
$T$ -Test of difference $= 0$ (vs not $= ) : T$ -Value $= - 3.19$ p-Value $= 0.006 \quad \mathrm { DF } = 16$

• A) Reject the null hypothesis.
• B) Do not reject the null hypothesis.
• C) Evidence suggests that there is a significant difference in mean mortgage rates
• Between credit unions and banks.
• D) Both A and C.
• E) Both B and C.

Understand the concept of interpersonal communication barriers and their impact on communication.

Recognize the significance and effects of physical barriers in communication.

Identify the role and implications of informal communication networks, such as grapevines, in organizations.

Comprehend the importance of channel richness in effective communication.

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Definitions:

GAAP

Generally Accepted Accounting Principles, which are standards and conventions for financial reporting in the United States.

Compensation Costs

The expenses incurred by a company to pay employees, including salaries, benefits, bonuses, and social security contributions.

Grant Date

The date on which an employee receives a stock option or grant as part of their compensation package.

Stock-Based Compensation

A method of paying employees or service providers using shares of the company's stock, reflecting a form of non-cash compensation.