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State the hypothesis and calculate the test statistic for proportion:
1. In a random sample of 400 persons who were given a flu vaccine, 136 said that they experienced some type of discomfort. Construct a 95% confidence interval for the proportion of all those who experience some type of discomfort.
2. Do the data provide sufficient evidence to conclude that the proportion of those who experience some type of discomfort is more than 30%? Answer the question using the following steps
a. State the null and alternative hypotheses.
b. Calculate the test statistics. Show your work.
Find out the correlation among the two variables in the regression. A simple linear regression produced the following computer output.
Would you use a one-tailed or two-tailed test? Explain your response.
Compute the following linear programming problem and describe the special case of a linear programming problem in which.
Either summarize your design or give an appropriate layout with table.
Suppose the random variable x is best described by a normal distribution with µ = 24 and σ = 2.7. Find the z-score that corresponds to each of the following x values.
Determine the test value? Use α = 0.05. (Use the variances unequal formula).
Last week Sarah had exams in Math and in Spanish. On the Math exam, the mean was u, = 30 with a = 5, and Sarah had a score of X - 45. On the Spanish exam, the mean was u, = 60 with 0 = 6 and Sarah had a score of X = 65. For which class must Sarah ..
Data in table represent number of consumer complaints against major U.S. airlines. If one complaint from table is arbitrarily chosen, determine the probability that it was filed against United Airlines.
To test productivity quickly, he has his shift foremen record number of defective T-shirts made in randomly sampled week. Critical Value: t =Test Statistic (Show procedure.): t =?
Find the probability that he will answer all 10 questions correctly.
Suppose the sample variance for 30 parts turns out to be s 2 = .0005. Use α = .05 to test whether the population variance specification is being violated.
Determine the lowest weight a student can have and still be qualified to enter the school.
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