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The city council of a suburb of Columbus is interested in the level of public support for a new recreation center. A marketing research firm is selected who then selects a simple random sample of 50 adult residents and contacts each to determine whether the resident would be interested in joining this recreation center if it were built. Of these 35 indicated they would be interested in joining the recreation center.
The population of interest is
A. all household in the suburb.B. the 50 residents contacted.C. all adult residents in the suburb.D. the residents in the suburb that support the new recreation center.
Also, 72 percent of the managers have MBA degrees. Using the probability formulas, find the proportion of employees who either have MBAs or are managers.
Briefly remind us of the two variables in your correlation and the operational definition of each. State the null hypothesis and the alternative hypothesis (be sure to clearly label each one) for your correlation.
Variance hour 100 and battery y: sample size 12,mean hour 1020,variance hour 121. can you conclude that two types of batteries are having the same mean life?
Find the probability using the Poisson distribution.
Test against the null hypothesis of a one sided alternative that the difference is more than 10 minutes. Use a .1 level of significance (alpha).
Agency wants to select samples from 10 landfills. The director has 15 landfills from which she can collect samples. how many different samples are possible?
Ccarry out a Z test using the five steps hypothesis testing with a two-tailed test at the .05 significance level, and make a drawing of the distributions involved.
Harry and Melissa Jacobson produce handcrafted furniture in a workshop on their farm. They have obtained a load of 600 board feet of birch from a neighbour and are preparation to produce round kitchen tables and ladder-back chairs during the next ..
A test of hypothesis is conducted at the .05 level of significance to test either or not the population correlation is zero.
Suppose you receive a shipment of 33 computers, two of which are defective. What is the probability of picking a sample of 6 computers with exactly one bad computer in it? a girl is seated at each end of the row?
Why might normality be an issue here? (c) What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence? (d) If this is not a reasonable requirement, suggest one that is.
Call centers typically have high turnover. The director of human resources for a large bank has compiled data on about 70 former employees at one of the bank's call centers in the Excel file Call Center Data.
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