Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Emily is trying to check if the nutritional content of different formulas have different effects on mice. She uses five mice to test each type

Emily is trying to check if the nutritional content of different formulas have different effects on mice. She uses five mice to test each type of formulas (A, B, and C) and Formula A is simply a placebo. Each mouse's weight is recorded in grams. At the end of a specified time period, each mouse is weighed again and the net weight gain in grams is recorded as shown in Table 1 below.

Formula A

Formula B

Formula C

40

47

51

32

42

41

42

49

44

36

46

46

39

44

49

Using an F-test, determine whether or not the variance in weight gain is statistically the same among the mice that were given Formula A and Formula C. Test at a confidence level of 95%. (HINT: Remember that the bigger standard deviation goes in the numerator when calculating the test statistic)

  1. The standard deviation for Formula A is and the standard deviation of Formula C is (Round to two decimal places).
  2. The F-test statistic calculated for this problem is (Round to two decimal places).
  3. The critical-F value at alpha = 0.05 for this problem is (Round to two decimal places).
  4. Do we have enough evidence to claim that the variance of the weight gains between the two groups is different? (Write "Yes" or "No")

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access with AI-Powered Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Principles of Auditing and Other Assurance Services

Authors: Ray Whittington, Kurt Pany

19th edition

978-0077804770, 78025613, 77804775, 978-0078025617

Students also viewed these Mathematics questions