Daily Archives: October 21, 2020

Would there be any reason to question the validity of any observation at the 95% level?

Using sample statistics and the data from Problem 3.12, construct a 95% confidence interval:

(a) for a single observation, and identify any observations that may be identified as possible outliers in the data.

(b) for the mean.

Problem 3.12

Problem 3.12

Using the following data set, answer the questions that follow.

17.5 15.0 13.4 23.9 25.2 19.5 25.8 30.0 22.5 35.3 39.5 23.5 26.5 21.3 22.3 21.6 27.2 21.1 24.0 23.5 32.5 32.2 24.2 35.7 28.0 24.0 16.8 21.1 19.0 30.7 30.2 33.7 19.7 19.7 25.1 27.9 28.5 22.7 31.0 28.4 31.2 24.6 30.2 16.8 26.9 23.3 21.5 18.8 21.4 20.7

(a) What are the mean and standard deviation of the data set?

(b) Construct a centered relative frequency histogram of the data using seven intervals and discuss….

compute the estimated error in the overall distance as measured by both the 100- and 200-ft tapes. Which tape produced the smallest error?

In Problem 2.6, compute the estimated error in the overall distance as measured by both the 100- and 200-ft tapes. Which tape produced the smallest error?

Problem 2.6

Problem 2.6

A distance was measured in two parts with a 100-ft steel tape and then in its entirety with a 200-ft steel tape. Five repetitions were made by each method. What are the mean, variance, and standard deviation for each method of measurement?

Distances measured with a 100-ft tape: Section 1: 100.006, 100.004, 100.001, 100.006, 100.005 Section 2: 86.777, 86.779, 86.785, 86.778, 86.774

Distances measured with a 200-ft tape: 186.778, 186.776, 186.781, 186.766, 186.789

What is the most probable value for the distance and the standard deviation of the weighted mean?

A distance was measured by pacing as 267 ft with a standard deviation of 3 ft. It was then measured as 268.94 ft with a steel tape and had a standard deviation of 0.05 ft. Finally, it was measured as 268.99 ft with an EDM. The EDM instrument and reflector setup standard deviations were 0.005 ft and 0.01 ft, respectively, and the manufacturer’s estimated standard deviation for the EDM instrument is (3 mm 3 ppm). What is the most probable value for the distance and the standard deviation of the weighted mean?

What standard deviation is computed for each weighted observation of Problem 10.4?

What standard deviation is computed for each weighted observation of Problem 10.4?

Problem 9.04

A distance was measured by pacing as 267 ft with a standard deviation of 3 ft. It was then measured as 268.94 ft with a steel tape and had a standard deviation of 0.05 ft. Finally, it was measured as 268.99 ft with an EDM. The EDM instrument and reflector setup standard deviations were 0.005 ft and 0.01 ft, respectively, and the manufacturer’s estimated standard deviation for the EDM instrument is (3 mm 3 ppm). What is the most probable value for the distance and the standard deviation of the weighted mean?

Design a 6 mi 6 mi control network having a minimum of eight control stations using a topographic map of your local area.

Design a 6 mi 6 mi control network having a minimum of eight control stations using a topographic map of your local area. Design a traditional measurement network made up of angles, azimuths, and distances so that the largest ellipse axis at a 95% confidence level is less than 0.20 ft and so that all observations have redundancy numbers greater than 0.5. In the design, specify the shortest permissible sight distance, the largest permissible errors in pointing, reading, and instrument and target setup errors, the number of repetitions necessary for each angle measurement, and the necessary quality of angle and distance measuring instruments. Use realistic values for the instruments. Plot profiles of sight lines for each observation.

How much is charged to the overhead as premium pay of the 3rd shift?

Victory Manufacturing Company produces a variety of products. The firm operates 24 hours per day with three daily work shifts. The 1st shift workers receive regular pay. The 2nd shifts receive 10% pay premium, the 3rd shifts receive 20% pay premium. In addition, the firm pays overtime premium of 50% based on the pay rate for for the 1st shifts. All labor premiums are included in the overhead. The actual payroll for the month is as follows:Total wages for 16,000 hours ?Wage rate per hour for the 1st shift 35Total regular hours worked 15,000.00 1. How much is the total payroll? 2. How much is charged to direct labor? 3. How much is charged to the overhead as overtime pay? 4. How much is charged to the overhead….

Summarize sales by month and sales division using a pivot table in Excel (hint: put divisions in columns, months in rows) or using a graph or chart in Tableau.

As the in-charge senior auditor on the audit engagement for JA Tire Manufacturing for the year ended December 31, 2019, you are responsible for performing risk assessment procedures related to the sales cycle. JA Tire has four sales divisions within the U.S. and sells primarily to large tire companies with regional warehouses that subsequently distribute to local retailers. Based on some of the risk assessment procedures already performed, you identified risks related to the fact that salespersons receive a commission on sales to distributors and the commission is calculated on a monthly basis. Your manager has asked you to perform analytical procedures as a part of audit planning to review sales information by sales division and by month to identify potential risk areas that might warrant further audit….

Does the journal have anything to gain by publishing positive or negative results from this study?

1.       What is the evidence that this journal is peer-reviewed? Find the home page of this journal on the Web. Does the journal have an editorial board?

2.       Does the journal have anything to gain by publishing positive or negative results from this study?

3.       Is there evidence of bias in the way the study was designed or implemented? If so, how does it affect the nurses’ use of these data in the practice setting?

4.       Appraise the level of evidence this research study provides the nurse and the strength of the recommendation for practice provided by the results.

  How do the authors minimize the risks to the subjects?

1.       In which ways are the subjects in this study vulnerable? Which protections should be put in place to protect these subjects from harm?

2.       Identify the potential risks inherent in this study for the subjects. What should specifically be included in the informed consent for this study?

3.       What evidence is provided by the authors that the study was reviewed by the IRB and that appropriate informed consent was obtained?

4.       How do the authors minimize the risks to the subjects?

5.       In your opinion, do the potential benefits of this treatment outweigh the potential risks to the infant? Why or why not?

Replicate the studies of others whenever possible.

1.Replicate the studies of others whenever possible. Finding a similar study can help jump-start your own study by describing procedures and measures that you might be able to use. The original author will likely be flattered; contact with him or her may garner you free advice as well.

2. Use standard designs, methods, and procedures whenever possible, even if they do not exactly match your question. Standardized approaches allow for the aggregation of similar studies into practical guidelines that make a contribution to the overall body of nursing knowledge.