A door is 8 feet tall and 4 feet wide. What is the area?
2 answers:
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Answer:
Step 1: The null and alternative hypothesis for the one way analysis of variance is,
H₀ : There is no difference in the means of each area.
H₁ : At least one mean is different.
The objective of this question is to test whether the income of the three areas are significantly different.
Step 2: The problem states to use 0.05 significance level.
Step 3: The test statistic follows the F-distribution.
Step 4: Decision rule is based on the critical value.
Numerator degrees of freedom is,
K - 1 = 3 - 1
= 2
Denominator degrees of freedom is 2.
n - k = 12 - 3
= 9
Using the F-distribution table for ∝=0.05 with numerator and denominator degrees freedom, the critical value is 4.26. The decision rule is to reject H₀ if the computed value of F exceeds 4.26.
Step 5: Calculations.
Using Excel follow the steps mentioned below.
1. Import or type the data into spreadsheet.
2. Data--------> Data Analysis----------> Anova: Single Factor, click OK.
3. Select Input Range, make a tick mark on Labels in the first row, enter 0.05 for alfa.
4. Click OK.
The obtained output for the one-way ANOVA is,
[ find the figure in attachment]
From the obtained output, the computed test statistic value, F = 14.18 , which is greater than the critical value of 4.26. So, reject H₀
Step 6: Interpretation. The average income of each area is different. It can be concluded that the average income is significantly different .
Answer: a) 0.16, b) 0.058, and c) 0.856.
Step-by-step explanation:
Since we have given that
Number of students = 500
Number of students smoke = 179
Number of students drink alcohol = 228
Number of students eat between meals = 119
Number of students eat between meals and drink alcohol = 59
Number of students eat between meals and smoke = 72
Number of students engage in all three = 30
a) Probability that the student smokes but does not drink alcohol is given by
b) eats between meals and drink alcohol but does not smoke.
c) neither smokes nor eats between meals.
Hence, a) 0.16, b) 0.058, and c) 0.856.