I If the Null Hypothesis States That There Is No

question 53

Multiple Choice

i. If the null hypothesis states that there is no difference between the mean income of males and the mean income of females, then the test is one-tailed.
Ii) If we are testing for the difference between two population means, it is assumed that the sample observations from one population are independent of the sample observations from the other population.
Iii) When sample sizes are less than 30, a test for the differences between two population means has n
- 1 degrees of freedom.

• A) (i), (ii) and (iii) are all correct statements
• B) (i) and (ii) are correct statements, but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (ii) is a correct statement, but not (i) and (iii).

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Definitions:

R

A symbol commonly used to represent resistance in electrical circuits.

RC Parallel Circuit

A circuit configuration consisting of a resistor (R) and a capacitor (C) connected in parallel, which influences the charging and discharging time constants.

R

Symbol commonly representing resistance in electrical equations, measured in ohms (Ω).

RC Parallel Circuit

An electrical circuit that consists of resistors (R) and capacitors (C) connected alongside each other in parallel, allowing for AC filtering or timed circuits.