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Assume that the significance level is alpha equals α=0.05. Use the given statement and find the? P-value and critical? value(s).
The test statistic of z equals = -1.53 is obtained when testing the claim that p= 1/6
P-value equals
(Round to four decimal places as? needed.)
The critical? value(s) is/are
The level of significance selected is 0.01 and 26 accounts are sampled. What is the critical value? Based on a sample size of 25?
An auditor selected a random sample of 12 accounts from all accounts receivable of a given firm.- Compute an estimate of the mean amount of all accounts receivable. Give an estimate of the variance of all the amounts.
a 99 confidence interval for the mean of a normal population when the standard deviation ? is known is found to be 98.6
We consider a queueing system in which ordinary customers arrive according to a Poisson process with rate λ and are served in a random time having an exponential distribution, with parameter μ, by either of two servers.
A new procedure is being tested for the assembly of electronic circuit boards. For each of five employees, the time required to assemble a board is measured for both the current procedure and the method that has been proposed.
A soil scientist is considering the effect of soil pH level on the breakdown of a pesticide residue. Two pH levels are considered in the study.
Assuming that the study included a sample of 120 Liberty families, and using the 0.01 level of significance, could the percentage of Liberty families owning this modern convenience be higher than for the nation overall?
Do all three prototypes have the same average range? Construct an ANOVA table, and carry out the test. Explain your results.
A simple random sample of pages of my dictionary was collected. These are the number of words defined on each page. Find the mean, median, and mode.
The insect then chooses one of the two branches. Suppose that 45 of 75 insects choose the pheromone branch. The 95% large-sample confidence interval for the proportion of the population that prefers the pheromone branch is:
Find the probability of getting at least 127 boys among 152 babies. Does the result suggest that the YSORT method is effective? Why or why not?
in a pew research center poll of 800 randomly selected adults 600 said that it is morally wrong to not report all
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