Purchase Solution

# Anova and confidence intervals

Not what you're looking for?

Using the confidence intervals: 95%
Determine which groups differ in average shelf life.
A B C D
94 88 76 82
100 89 69 80
90 88 76 82
97 83 79 78
101 79 80 89
90 82 72 80
give test statistic, hypothesis, decision rule and hypothesis

##### Solution Summary

The expert examines an ANOVA and confidence interval. The average shelf life of different groups are given. The solution answers the question(s) below.

##### Solution Preview

Null Hypothesis:
Ho: mu1 - mu2 = 0
Alternative hypothesis:
H1: mu1 - mu2 != 0

Mean calculations:
<A> = sum(A)/6 = 572/6 =95.33
<b> = 509/6 = 84.83
<C> = 452/6 = 75.33
<D> = 491/6 = 81.83
sum((A-<A>)^2) = 115.33
sum((B-<b>)^2) = 82.83
sum((C-<C>)^2) = 87.83
sum((D-<D>)^2) = 72.57

If t(calculated) > t(table) => Ho rejected

for any combination: (like A and B)
sqrt((1/n1) + ...

Solution provided by:
###### Education
• MSc , Pune University, India
• PhD (IP), Pune University, India
###### Recent Feedback
• " In question 2, you incorrectly add in the \$3.00 dividend that was just paid to determine the value of the stock price using the dividend discount model. In question 4 response, it should have also been recognized that dividend discount models are not useful if any of the parameters used in the model are inaccurate. "
• "feedback: fail to recognize the operating cash flow will not begin until the end of year 3."
• "Great thanks"
• "Perfect solution..thank you"

##### Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.