Verify that the test statistic is equal to 2.3

Assignment Help Basic Statistics

Reference no: EM131402608

Feminizing faces study. Research published in Nature (August 27, 1998) revealed that people are more attracted to ‘‘feminized'' faces, regardless of gender. In one experiment, 50 human subjects viewed both a Japanese female and Caucasian male face on a computer. Using special computer graphics, each subject could morph the faces (by making them more feminine or more masculine) until they attained the ‘‘most attractive'' face. The level of feminization y (measured as a percentage) was measured.

(a) For the Japanese female face, y‾ = 10.2% and s = 31.3%. The researchers used this sample information to test the null hypothesis of a mean level of feminization equal to 0%. Verify that the test statistic is equal to 2.3.

(b) Refer to part a. The researchers reported the p-value of the test as p ≈ .02. Verify and interpret this result.

(c) For the Caucasian male face, y‾ = 15.0% and s = 25.1%. The researchers reported the test statistic (for the test of the null hypothesis stated in part a) as 4.23 with an associated p-value of approximately 0. Verify and interpret these results.

Reference no: EM131402608

Questions Cloud

Do the data suggest that the area sampled is grassland : It is known that the mean lacunarity measurement for all grassland pixels is 220. Do the data suggest that the area sampled is grassland? Test at α = .01.

Define leadership and management : Define leadership and management. Differentiate between leadership and management with specific examples from the text, literature, or personal example. What are some of the different leadership and management roles and what are their functions..

Events using the binomial formula : 1. In a binomial situation n = 5 and pi = 0.40. Determine the probabilities of the following events using the binomial formula:

Confidence interval for the mean : Let these ratios represent a random sample drawn from a normally distributed population. Construct the 90% confidence interval for the mean P/E ratio for the entire footwear industry.

Verify that the test statistic is equal to 2.3 : For the Japanese female face, y‾ = 10.2% and s = 31.3%. The researchers used this sample information to test the null hypothesis of a mean level of feminization equal to 0%. Verify that the test statistic is equal to 2.3.

Is there sufficient evidence to indicate : It is well known that the mean resting heart rate of adults is 71 beats/minute.- At α = .05, is there sufficient evidence to indicate that the true mean heart rate during laughter exceeds 71 beats/minute?

Write a paper using the aim and characteristic of persuasion : Write a 750 word paper using the AIM, characteristics of persuasion, and research principles covered in the learning activities to complete your assignment.

Assignment - the menace of child exploitation : Assignment - The Menace of Child Exploitation. Write a 1,050- to 1,300-word paper explaining the effect each of the following types of child exploitation has on the child and the family

Describe the role of the international monetary fund : In the model constructed in this chapter, what are the effects on the domestic economy of an increase in the foreign price level under a flexible exchange rate and under a fixed exchange rate?

User Account

All Pages