A 30-Kg Block Slides on a Frictionless 20 $\degree$ Inclined Plane

question 20

Multiple Choice

A 3.0-kg block slides on a frictionless 20 $\degree$ inclined plane. A force of 16 N acting parallel to the incline and up the incline is applied to the block. What is the acceleration of the block?

• A)2.0 m/s2 down the incline
• B)5.3 m/s2 up the incline
• C)2.0 m/s2 up the incline
• D)3.9 m/s2 down the incline
• E)3.9 m/s2 up the incline

Identify correct statements about the probability and interpretation of confidence intervals.

Apply knowledge of confidence intervals to determine the impact of sample size on the precision of mean estimates.

Analyze how changes in sample size affect the variability among sample means.

Comprehend definitions and roles of population and sample standard errors in constructing confidence intervals.

---

Definitions:

Profits

The financial gain achieved when the amount of revenue gained from a business activity exceeds the expenses, costs, and taxes involved in sustaining the activity.

Linear Regression

A statistical method for modeling the relationship between a dependent variable and one or more independent variables, assuming a linear relationship.

Least Squares

A mathematical approach used in regression analysis to minimize the sum of the squares of the differences between observed and predicted values.

Goals/G

In sports statistics, a metric that indicates the average number of goals scored per game by a team or player.