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Q1) Shop has 4 machinists to be assigned to 4 machines. Hourly cost of having each machine operated by each machinist is as follows:
Machine
Machinist
A
B
C
D
1
$10
$2
$8
$6
2
9
5
11
3
12
7
14
4
i) Create a linear programming model for this problem.
ii) Find out optimal assignment and calculate total minimum cost.
Q2) 3 members of club will be chosen to serve as officers. First person selected will be president, second person will be vice-president and third will be secretary/treasurer. How many methods can these officers be chosen if there are 30 club members?
i) 4060
ii) 27000
iii) 52360
iv) 24,360
v) 90
Assume the data for the three groups are independent and the data are approximately Normal. The P-value is less than 0.01. The correct conclusion is that
A sample of 200 traffic accidents this year showed 74 persons were also involved in another accident within the last five years. Use the .01 significance level. Can we use z as the test statistic? Tell why or why not.
Determine the values of mean M and standard deviation s for original sample?
A certain firm specializing in the manufacture and sale of free time clothing has 80 retail stores in Florida and 140 in California. With each state as a stratum, the firm wishes to estimate average sick-leave time per employee for the past year
Find the lowest possible score a candidate can score and still qualify. Assume the scores are normally distributed.
The mean assembly time for a random sample of 24 carts, using the new method, was 40.6 minutes, and the standard deviation of the sample was 2.7 minutes.
You will be graded on accuracy, completeness (addressing each point above), and effectiveness (utility, ease of reading).
Crete a 90% confidence interval for mean Secchi dish measurement.
What does the standard deviation mean? Interpret the standard deviation relative to the average or mean?
If the sample standard deviation of the sample was $630 also the sample size was 50. Findout the 90% confidence interval of true mean.
Calculate the value of Pearson correlation. Illustrate what information is provided by the numerical value of the Pearson correlation.
Recognize the kind of sampling (random, systematic, convenience, stratified, cluster) employed whenever a sample of people who smoke is obtained as explained below.
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