HW 5 - HW 5 Inference for Two Population Means 1. The Type...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
HW 5 Inference for Two Population Means 1. The Type II Error rate, β = P{failing to reject H 0 |H 0 is false}, for a hypothesis test was calculated to be β = 0.07. What is the power = P{rejecting H 0 | H 0 is false} for this test? 2. Don is studying species of fish inhabiting a certain river. He fails to reject the null hypothesis that there are an equal amount of species of fish found in the pools and in the riffles of this river. Which of the following statements is true? Don may have made a Type I error. Don definitely made a Type I error. Don may have made a Type II error. Don definitely made a Type II error. Don definitely did not make either a Type I or a Type II error. 3. 7.38. Researchers studied the effect of a houseplant fertilizer on radish sprout growth. They randomly selected some radish seeds to serve as controls, while others were planted in aluminum planters to which fertilizer sticks were added. Other conditions were held constant between the two groups. The following table shows data on the heights of plants (in cm) two weeks after germination. Control Fertilized 3.4 1.6 2.8 1.9 4.4 2.9 1.9 2.7 3.5 2.3 3.6 2.3 2.9 2.8 1.2 1.8 2.7 2.5 2.4 2.7 2.6 2.3 2.2 2.6 3.7 1.6 3.6 1.3 2.7 1.6 1.2 3.0 2.3 3.0
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4

HW 5 - HW 5 Inference for Two Population Means 1. The Type...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online