Essay on Math 533 Final Exm
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1. (TCO A)Consider the following sample data on the age of the 30 employees that were laid off recently from DVC Inc.
21 38 20 26 37 52 37 24 45 20
50 49 44 30 29 42 56 46 60 30
32 25 47 55 38 25 20 29 32 30 a. Compute the mean, median, mode, and standard deviation, Q1, Q3, Min, and Max for the above sample data on age of employees being laid off.
b. In the context of this situation, interpret …show more content…
c. The management of a supermarket wants to adopt a new promotional policy giving a free gift to every customer who spends more than a certain amount per month at this supermarket. Management plans to give free gifts to the top 8% of its customers (in terms of their expenditures). How much must a customer spend in a month to qualify for the free gift? (Points : 18)
5. (TCO C) A tool manufacturing company wants to estimate the mean number of bolts produced per hour by a specific machine. A simple random sample of 9 hours of performance by this machine is selected and the number of bolts produced each hour is noted. This leads to the following results. Sample Size = 9
Sample Mean = 62.3 bolts/hr
Sample Standard Deviation = 6.3 bolts/hr
a. Compute the 90% confidence interval for the average number bolts produced per hour.
b. Interpret this interval.
c. How many hours of performance by this machine should be selected in order to be 90% confident of being within 1 bolt/hr of the population mean number of bolts per hour by this specific machine? (Points : 18)
6. (TCO C) A clock company is concerned about errors in assembly in their custom made clocks. A simple random sample of 120 clocks yields nine clocks with errors in assembly. a. Compute the 99% confidence interval for the proportion of clocks with errors in assembly.…

Math 533 Part C Essay
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1868 Words  8 Pagesand $5,086. Minitab Output OneSample T Test of mu = 4300 vs > 4300 95% Lower N Mean StDev SE Mean Bound T P 15 4675 742 192 4338 1.96 0.035 Final Report of Results Before parts ad are broken down, provided below are a the Seven Elements of a Test Hypothesis that will assist one in understanding the different terminology used in this report. Elements of a Test of Hypothesis 1. Null hypothesis…

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948 Words  4 PagesAJ DAVIS is a department store chain, which has many credit customers and wants to find out more information about these customers. A sample of 50 credit customers is selected with data collected on the following five variables: LOCATION (Rural, Urban, Suburban) INCOME (in $1,000's – be careful with this) SIZE (Household Size, meaning number of people living in the household) YEARS (the number of years that the customer has lived in the current location) CREDIT BALANCE (the customers current…

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11649 Words  47 Pageshousehold income. This group has the highest proportion of households with more than two persons. If one considers this segment as roughly onethird of all air travel trips, another onethird is composed of the next three largest market segments, and the final onethird is comprised of the remaining five segments. This distribution is illustrated in Figure 4. The second largest segment is also composed of men, in this case on a nonbusiness trip. This group of trips is made by men who have the same characteristics…
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