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Why is the F distribution important? How do you determine if a significant difference exists among the groups in ANOVA? How do you determine differences between the groups in ANOVA? Describe the requirements that must be met before an ANOVA test may be used. Discuss what the researcher must do if one of these requirements is not met.
Test at 5% and 1% whether the molder is operating satisfactorily.
Evaluate probability values using normal distribution and How many students earned more than $36,000? _______
Create one table that calculates summary measures of the change in test scores and income variables across all 80 schools.
A study of vehicle flow characteristics on acceleration lanes found that one out of every six vehicles uses less than 1/3 of the acceleration lane before merging into the traffic.
At the 0.05 level of significance, is there evidence that the proportion of incorrect reimbursements in the population was greater than 0.10? Discuss the underlying assumptions of the test used in (a)
A random sample of 100 computers showed a mean of 115 gigabytes used with a standard deviation of 20 gigabytes. What is the standard error of the mean?
Describe a 5-step hypothesis test of multiple means (using the one-factor or the two-factor ANOVA test process) for a particular claim related to your work or life environment.
Test whether there is any change in IQ after the training program. (The absolute value of t for 4 degrees of freedom at 1% level for one-tailed and two tailed tests are 3.747 and 4.604 respectively.
Medical tests were conducted to learn about drug-resistant tuberculosis. Of 142 cases tested in NJ, 9 were found to be drug-resistant. Of 268 cases tested in Tx, 5 were found to be drug-resistant.
The Z score on the comparison distribution for the sample score, and (c) your conclusion. Assume that all populations are normally distributed.
You sample a group of computers and use the sample statistics to calculate a 95% confidence interval of (-10.95, -1.5). This interval estimates the difference of (average boot time (HDD) - average boot time (SSD)). What can we conclude from this i..
question 1. in an article a random sample of 42 felons convicted of impulsive murder was compared to a random sample of
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