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Perform a two way ANOVA with replication.
You are the production manager of a company. Parachutes are woven in your factory using a synthetic fiber purchased from one of four different suppliers. The most important outcome for parachutes is strength of the fabric. You must decide whether the synthetic fibers from your four suppliers result in parachutes of equal strength (one main effect).There are two types of looms in the factory: the Jetta and the Turk. Are the parachutes woven on the Jetta looms and those woven on the Turks looms equally strong (second main effect)? Also, are any differences in the strength of the parachute that can be attributed to the four suppliers dependent on the type of loom used (interaction effect)? You perform an experiment to answer these questions and must eventually decide which supplier and type of loom to use in order to manufacture the strongest parachutes. The data is below:
1
2
3
4
jetta
20.6
22.6
27.7
21.5
18
24.6
18.6
20
19
19.6
20.8
21.1
21.3
23.8
25.1
23.9
13.2
27.1
17.7
16
turk
18.5
26.3
25.4
24
25.3
25.2
19.9
17.2
21.2
24.7
17.5
24.5
22.9
20.4
Show the excel output needed and answer the following:
- Are there main effects?
- Is there an interaction effect?
- What are the managerial implications of these findings?
Compute the variance and standard deviation of the number that will arrive within two days.
Explain your answer to someone who is familiar with the t test for a single sample, but not with the t test for independent means.
When we carry out a goodness of fit chi-square test, the expected frequencies are based on the alternative hypothesis
If p is the probability of Event 1 and (1-p) is the probability of Event 2, based on the expected returns, for what values of p would you select A? B? C? Values in the table are payoffs.
To determine whether there exists mean difference among the groups:
Utilizing the 5% level of significance was there a significant change in cholesterol level. Elucidate your answer to someone who has never ever taken a course in statistics.
Plot a scatter diagram of the results with Depth of Water as the independent variable.
Test hypothesis that both propellants have same mean burning rate. Utilize α=0.05. Compute the P value.
Use suitable one or two sided test for null hypothesis of no difference in them then changes rating between groups at 0.10 significance level.
To find the 95 percent confidence interval for the true population mean. From the results below, is it true that 95% of the sample means will fall
Use a 5% significance level to test the claim that there appears to be a difference in the effectiveness of the two diets.
The remaining 5 were not given the overview. Here are the scores for students in each group:
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