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Set up the ANOVA table and give conclusion. Random samples of 25 observations were selected from each of 3 populations. For these data, SSTR= 120 and SSE = 216.
a. Set up the ANOVA table for this population.
b. At alpha= 0.05 level of significance, can we reject the null hypothesis that three population means are equal?
What fraction of the calls last between 4.2 and 5 minutes?
A pair of dice is rolled. What is the probability of each of the following? (Round your answers to three decimal places.)
Do 1-sample t-test to see if people in Chicago have travelled to fewer states than people nationwide. Utilize the 10% (.10) level of significance.
Test the hypothesis. Will you reject or not reject the null hypothesis at α = 0.05
Probability using discrete distribution.The probability distribution for the random variable x follows.
There were 3 defectives in the first batch and 5 in the second. Find a 95% confidence interval for the difference in the proportion of defectives.
To test whether there is a significant mean difference among the three.
What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence?
Compute standard error of mean? Compute the margin of error, with 95% confidence.
Determine the class with the greatest number of data values.
An experiment consists of flipping the fair coin three times and noting the number of heads and tails. A random variable x is defined to be two times the number of heads plus the number of tails.
Determine marginal probability distributions of X and Y . Compute conditional probability P ( Y = 2 | X = 1)
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