erik measured the area of scallops in two places in florida and used an appropriate hypothesis test to examine whether there was a difference in the area of scallops in these two places. Type II error occurred when erik performed his hypothesis test. What happened? In fact, there is a difference in the average surface area of scallops in these two places, but erik rejected the counter-hypothesis and asserted that there was no difference.In fact, there is no difference in the average surface area of scallops in these two places, but erik asserted that there was a difference.In fact, there is no difference in the average surface area of scallops in these two places, but erik could not draw any conclusions from his hypothesis test.In fact, there is a difference in the average surface area of scallops in these two places, but erik could not draw any conclusions from his hypothesis test.

type 2 error means accepting null hypothesis when it is actually false H0 : there is no difference…

erik measured the area of scallops in two places in florida and used an appropriate hypothesis test to examine whether there was a difference in the area of scallops in these two places. Type II error occurred when erik performed his hypothesis test. What happened? In fact, there is a difference in the average surface area of s

erik measured the area of scallops in two places in florida and used an appropriate hypothesis test to examine whether there was a difference in the area of scallops in these two places. Type II error occurred when erik performed his hypothesis test. What happened? In fact, there is a difference in the average surface area of s

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015

1st Edition

ISBN:9781680331141

Author:HOUGHTON MIFFLIN HARCOURT

Publisher:HOUGHTON MIFFLIN HARCOURT

Chapter4: Writing Linear Equations

Section: Chapter Questions

Problem 14CR

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Einar Óli measured the area of scallops in two places in Breiðafjörður and used a t-test to find out if there was a difference in the area of scallops in these two places. Type II error occurred when Einar Óli performed his hypothesis test. What happened?
In 2002 two researchers, Wiebe and Bortolotti, examined the color in tail feathers of northern flickers. Sometimes these birds had one tail feather that differed from the rest in color. This was perhaps because the feather had regrown after having been lost. The “odd” feather and a “typical” feather from each of the selected birds were analyzed with respect to degree of “yellowness.” Larger values of the measurement indicated that the feather color was less yellow. The question they wished to address was whether “odd” feathers and “typical” feathers differed with respect to the yellowness of their color. Bird A B C D E F Odd feather 324 245 299 198 27 45 Typical feather 255 213 190 185 45 25 Conduct the test. Provide the significance test formula, test statistic, p-value, and degrees of freedom if applicable.
In 2002 two researchers, Wiebe and Bortolotti, examined the color in tail feathers of northern flickers. Sometimes these birds had one tail feather that differed from the rest in color. This was perhaps because the feather had regrown after having been lost. The “odd” feather and a “typical” feather from each of the selected birds were analyzed with respect to degree of “yellowness.” Larger values of the measurement indicated that the feather color was less yellow. The question they wished to address was whether “odd” feathers and “typical” feathers differed with respect to the yellowness of their color. Bird A B C D E F Odd feather 324 245 299 198 27 45 Typical feather 255 213 190 185 45 25 1. Name the appropriate significance test
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How heavy a load (pounds) is needed to pull apart pieces of Douglas fir 4 inches long and 1.5 inches square? Students doing a laboratory exercise sample 20 pieces of wood and find an average load capacity of 30,841 pounds. We are willing to regard the wood pieces prepared for the lab session as an SRS of all similar pieces of Douglas fir. Engineers also commonly assume the characteristics of materials vary normally. Suppose that the strength of pieces of wood like these follow a normal distribution with a population standard deviation of 3,000 pounds (As you can see all three necessary assumptions are met). a. Assuming that all evergreen wood has a known "load" capacity average of 30,000 pounds. Make a two-sided hypothesis (null and alternative statement) about Douglas Fir "load" capacity compared to the overall average. b. Apply the formula for finding our test statistic (show your work or describe the process) Specifically, use the formula for the z-statistic (pasted below and on…