A Farmer Uses a Lot of Fertilizer to Grow His

question 27

Multiple Choice

A farmer uses a lot of fertilizer to grow his crops. The farmer's manager thinks fertilizer products from distributor A contain more of the nitrogen that his plants need than distributor B's fertilizer does. He takes two independent samples of four batches of fertilizer from each distributor and measures the amount of nitrogen in each batch. Fertilizer from distributor A contained 23 pounds per batch and fertilizer from distributor B contained 18 pounds per batch. Suppose the population standard deviation for distributor A and distributor B is four pounds per batch and five pounds per batch, respectively. Assume the distribution of nitrogen in fertilizer is normally distributed. Let µ₁ and µ₂ represent the average amount of nitrogen per batch for fertilizer's A and B, respectively. Which of the following is the correct value of the test statistic?

• A) t₆ = −1.5617
• B) t₆ = 1.5617
• C) z = −1.5617
• D) z = 1.5617

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Definitions:

Drive-reduction Theory

A theory in psychology suggesting that behavior is motivated by the desire to reduce internal tension caused by unmet needs.

Attachment Relationships

The emotional bonds formed between individuals, crucial for personal development and influencing lifelong relational patterns.

Self-conscious Emotion

Emotions that involve self-awareness and reflection on personal actions, such as shame, guilt, and pride.

Drive-reduction Theory

A motivational theory suggesting that psychological needs create an aroused state that drives organisms to satisfy those needs.