Express the Sum Using Summation Notation $\sum _ { k = 1 } ^ { 4 } 2 ^ { k }$

question 82

Multiple Choice

Express the sum using summation notation.
- $\sum _ { k = 1 } ^ { 4 } 2 ^ { k }$

• A) 14
• B) 30
• C) 20
• D) 18

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Definitions:

Sample Size

The number of observations or data points collected in a study or used in a statistical analysis, crucial for the validity and reliability of results.

T-Values

Statistics used in T-tests that compare the means of two groups. They indicate how many standard deviations an observed sample mean is from the null hypothesis mean.

Z-Values

Standardized scores that indicate how many standard deviations an element is from the mean.

Sample Size

The number of observations or data points used in a statistical sample.