A researcher wishes to see if the average weights of newborn male infants are higher than the average weights of newborn female infants. She selects a random sample of 12 male infants and finds the mean weight is 7.70 pounds and the sample standard deviation is 0.50 pounds. She selects a random sample of 9 female infants and finds that the mean weight is 7.25 pounds and the sample standard deviation is 0.60 pounds. Assume that the variables are normally distributed and population variances are not equal. Using alpha=0.05 to test if the mean weight of the males is significantly higher than the mean weight of the females the value of the test statistic can be: Α.1.82 В.о C. 1.96 D.-1.96 E. 2.04 F. 2.15 G.-1.82
A researcher wishes to see if the average weights of newborn male infants are higher than the average weights of newborn female infants. She selects a random sample of 12 male infants and finds the mean weight is 7.70 pounds and the sample standard deviation is 0.50 pounds. She selects a random sample of 9 female infants and finds that the mean weight is 7.25 pounds and the sample standard deviation is 0.60 pounds. Assume that the variables are normally distributed and population variances are not equal. Using alpha=0.05 to test if the mean weight of the males is significantly higher than the mean weight of the females the value of the test statistic can be: Α.1.82 В.о C. 1.96 D.-1.96 E. 2.04 F. 2.15 G.-1.82
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.3: Special Probability Density Functions
Problem 7E
Related questions
Topic Video
Question
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 3 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Recommended textbooks for you
Calculus For The Life Sciences
Calculus
ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,
Calculus For The Life Sciences
Calculus
ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,