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1. The following poll shows employees engagement with their work. The study also shows that having more engaged workers leads to increased innovation, productivity and profitability, as well as reduced employee turnover.
Country
Engagement
USA
Germany
Total
Engaged
550
246
796
Not engaged
1 345
1 649
2 994
1 895
3 790
If an employee is selected at random, what is the probability that he or she
a) is engaged with his or her workplaceb) is a US workerc) is engaged with his or her workplace or is a US workerd) explain the difference in the results in (b) and (c) 2. From the last year's data was found that the pizza restaurant filled the orders approximately 91% correctly. What is the probability that
a) All five orders will be filled correctlyb) None of the five will be filled correctlyc) At least four of the five will be filled correctly 3. For a survey, final exam grades of 100 students are gathered. The mean grade was 28 on a 40 based scale with a standard deviation of 4 Assume that the grades of students are approximately normally distributed. For a randomly selected student what is the probability that he or she scores
a) Below 20?b) Above 35?c) Between 25 -35? 4. 10 liter of petrol is put in each of the 30 test autos and the resulting figures are tabulated as follows: mean X = 120 km, s = 15 km. Determine a 99% confidence interval estimate of the mean mileage.
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Composite functions are useful when one quantity depends on a second quantity, and in turn that second quantity depends on a third quantity. This is an extremely general situation with lots of real-world applications.
For each of the following sampling scenarios, determine which test statistic is appropriate to use when making inference statements about the population mean.
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consider babies born in the normal range of 37-43 weeks gestational age. extensive data supports the assumption that
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How many social robots would need to be sampled in order to estimate the proportion ofrobots designed with legs, no wheels to within .075 of its true value with 99%confidence
A random sample of 70 printers discovered that a20 of them were being used in small businesses. Find the 99% limit for the population porportion of printers that are used in small businesses.
Create an APA style table that presents descriptive statistics for variables
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