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In a hypothesis test with hypotheses H0:μ≤45and H1:μ>45, a random sample of 62 elements selected from the population produced a mean of 46.0. Assume that σ=6.4, and that the test is to be made at the 2.5% significance level.
What is the critical value of z?
What is the value of the test statistic, z, rounded to three decimal places?
What is the p-value for this hypothesis test, rounded to four decimal places?
The data in the following table represents the total rate of reutrn in the value of stock of my company.
a manufacturer has designed a process to produce pipes that are 10 feet long. the distribution of the pipe length
Will the distribution of x bar always be approximately normally distributed, or does it depend on the distribution of the population?
Formulate the null and alternative hypothesis for this management question (i.e. can the financial analyst conclude that there is no difference in the average earnings yield between companies in the manufacturing and retailing sectors?)
a student survey was done to study the relationship between gender and favorite television program watched on sunday
An upper-level sociology class at a large urban university has 120 students, including 34 seniors, 57 juniors, 22 sophomores and 7 freshmen.
a february 2009 poll conducted by the marist college institute for public opinion in poughkeepsie new york asked a
Suppose we randomly select two students from a mathematics class and asked whether the student selected each time is a member of a math-club or not. Write all the outcomes for this experiment. Draw the Venn and Tree diagrams for this experiment.
Dan is at the bottom of Donna's preference list, and Donna is at the bottom of Dan's preference list. Is it possible that there is a stable matching that matches Dan to Donna?
1 according to a recent study 1 in every 10 women has been a victim of domestic abuse at some points in her life.
Sorry, no chi-square How do U.S. residents who travel overseas for leisure differ from those who travel for business? The following is the breakdown.
How large did this poll estimate the difference in support between Republicans and Democrats to be?- Was the margin of error for that difference equal to, greater than, or less than 3%? Explain.
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