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Question: A W6×12 is strengthened with a 3 4 -in -by- 3 4 -in. bar welded to its top flange as shown. Because of the weld used, the horizontal shear stress at the connection between the bar and the flange cannot exceed 4.0 ksi. In the web, the shear stress is limited to 20 ksi. Use the general shear formula to determine the allowable vertical shear force on this cross section.
Simulate 200 samples of n = 10 responses for HrsSleep. Show the commands you used, or explain how you did the simulation.- Draw a histogram of the 200 sample means.
Standard deviation of 23.8 days. What is the 90% confidence interval for the average days worked by employees in all payroll departments?
a local environmental organization is interested determining if the proportion of red cars in a city has increased from
Develop two-null hypothesis tests to ascertain if there are any statistical variances in the averages of bus route times and any statistical variance among the average performance of the bus drivers. Use the following information to conduct the te..
If a pregnancy length is randomly taken from this distribution, what is the probability that the length of that pregnancy is less than 260 days?
Telephone interviews were conducted on a representative sample of 1,003 adults living in the United States. For this sample, 506 adults admitted that they have paid to download music
Individual scores of a placement examination are normally distributed with a mean of 84.2 and a standard deviation of 12.8.If the score of an individual is randomly selected, find the probability that the score will be less than 90.0.
The overall maintenance budget over the life cycle is $C. Other constraints are that the total benefit must be at least a certain threshold, R units. What kind of knapsack problem is exemplified by this problem? Give reason for your answer.
You were hired to do the development work for the local high school. The school has asked you to create a program to store quiz grades for the students of a class.
while writing an article on the high cost of college education a reporter took a random sample of the cost of new
Your company has experienced problems with employee morale and productivity. The consultant that was hired submits a report that includes opinions and data collected from 300 secretaries and clerks as well as 75 senior managers.
The three characteristics you examined in Activity question 8 (shape, center, and spread of the sampling distribution) make up the central limit theorem. Without looking in a textbook, write a statement of what you think the central limit theorem..
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