Consider a Study in Which Two Sets of 20 Mice

question 41

Essay

Consider a study in which two sets of 20 mice were given different amounts of caffeine in their drinking water. Members of the control group got none and members of the experimental group received 0.01% caffeine in their water. Their activity levels were measured using the mean number of minutes each mouse spent running on the wheel in their cage over a series of 14 nights.
Control treatment: mean = 305 minutes, standard deviation = 50 minutes
Caffeine treatment: mean = 340 minutes, standard deviation = 60 minutes
You may assume that the variances are equal for the purposes of conducting a two-sample t-test.
Perform a complete two-sample t-test. Summarize your results with a statement about the 95% confidence interval for the difference between the means, draw a figure showing the 95 confidence intervals for each treatment, present the t-test statistic and P-value for the two-sample test, and state your conclusion with regard to accepting or rejecting the null hypothesis and what this means for the effects of caffeine on mouse activity levels.

Acknowledge the adaptability of Hollywood in response to legal and economic challenges, including shifts to the international market and changing business practices.

Understand the key films directed by Orson Welles and their historical context within the film industry.

Recognize the impact of Howard Hawks' thematic preoccupations in his filmography.

Identify the characteristics and defining elements of the film noir genre.

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Definitions:

Expectancy Theory

A psychological theory proposing that people are motivated to act in a certain way based on their expectation of the outcome and its attractiveness.

Reinforcement Theory

A theory in psychology that describes behavior as being driven by external rewards or punishments.

Need Hierarchy

A theory suggesting that people are motivated to fulfill basic needs before moving on to other, more advanced needs.

Self-actualization

The realization or fulfillment of one's talents and potentialities, considered as a fundamental concept in humanistic psychology.