A Study Was Conducted to Determine If Differences in New

question 49

Multiple Choice

A study was conducted to determine if differences in new textbook prices exist between on-campus bookstores,off-campus bookstores,and Internet bookstores.To control for differences in textbook prices that might exist across disciplines,the study randomly selected 12 textbooks and recorded the price of each of the 12 books at each of the three retailers.You may assume normality and equal-variance assumptions have been met.The partially completed ANOVA table based on the study's findings is shown here: Based on the study's findings,was it correct to block for differences in textbooks? Conduct the appropriate test at the alpha = 0.10 level of significance.

• A)Since F = 39.05 > F_α=0.10 = 1.88,reject the null hypothesis.This means that based on these sample data we can conclude that blocking is effective.
• B)Since F = 39.05 > F_α=0.10 = 1.88,do not reject the null hypothesis.This means that based on these sample data we can conclude that blocking is not effective.
• C)Since F = 40.05 > F_α=0.10 = 1.88,reject the null hypothesis.This means that based on these sample data we can conclude that blocking is effective.
• D)Since F = 40.05 > F_α=0.10 = 1.88,do not reject the null hypothesis.This means that based on these sample data we can conclude that blocking is not effective

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Definitions:

Nucleic Acids

Complex organic substances that carry genetic information, consisting of two main types: DNA and RNA.

ATP

For the purpose of metabolism, ATP, a molecule, is essential in moving energy across cells.

Iodine

A chemical element essential for the production of thyroid hormones, which regulate metabolism and are crucial for growth and development.

Thyroxine

A major hormone produced by the thyroid gland, important for regulation of metabolism, energy generation, and growth and development.