# Assignment: Statistical Functions Calculations

Assignment: Statistical Functions Calculations ORDER NOW FOR CUSTOMIZED AND ORIGINAL ESSAY PAPERS ON Assignment: Statistical Functions Calculations INSTRUCTIONS Even though you will use a calculator with statistical functions or software such as Excel to work the problems, please show your work (which includes stating the parameters you used in the calculator command) nonetheless. The only way I can give partial credit is when I can view your attempt. Assignment: Statistical Functions Calculations If you prefer to complete the exam by hand , print out this document, complete the test, scan (or photograph) and submit through Canvas. You may use extra paper if you necessary. Make sure I can read your handwriting! If you prefer to complete the exam electronically , submit this completed worksheet to Canvas just as you did the weekly homework. Use the rounding rules delineated in each appropriate chapter of the textbook to carry out your answers to the appropriate number of decimal places. You are welcome and encouraged to use your textbook and any notes you may have. 105 points total. Chapter 7 A random sample of the number of farms (in thousands) in various states is reported below. (15 pts) 47 95 54 33 64 4 8 57 9 80 8 90 3 49 4 44 79 80 48 16 68 7 15 21 52 6 78 109 40 50 29 Estimate the mean number of farms per state with 90% confidence. Assume ? = 31. Provide your calculated answer then round and provide a whole number answer. x? = ________ ? = 31 Chapter 8 An administrator at a Midwest university estimates that 12% of the female college students in a P.A. program will change their major to a D.O. program. A random sample of 100 female P.A. majors found that 9.5% had changed their major to a D.O. program. At ? = 0.05, is there enough evidence to reject the claim? Complete the hypotheses H 1, a summary of your answer, and draw the normal curve. (15 pts). Assignment: Statistical Functions Calculations H 0 : p = 0.12 (claim) p? = ________ p = ________ q = ________ H 1 : p 0.12 C.V. = ________ Supply correct symbol above. Essay: Write out (in a paragraph or so), the basic concept of hypothesis testing . (10 pts) Chapter 9 The average wind speed in Casper, WY, has been found to be 12.7 mph, and in Phoenix, AZ, it is 6.2 mph. To test the relationship between the averages, the average wind speed was calculated for a sample of 31 days for each city. The results are reported below. (15 pts). Asignment: Statistical Functions Calculations Casper Phoenix Sample size n 31 31 Sample mean x? 12.85 mph 7.9 mph Population standard deviation ? 3.3 mph 2.8 mph Is there sufficient evidence at ? = 0.05 to conclude that the average wind speed is greater in Casper than in Phoenix? Complete the hypotheses H 1, a summary of your answer, and draw the normal curve. H 0 : ? 1 = ? 2 ? = 0.05 C.V. = ________ H 1 : ? 1 ? 2 (claim) Supply correct symbol above. Chapter 10 A researcher wants to see if there is a relationship between the number of new productions on Broadway in any given year and the attendance for the season. The data below were recorded for a selected number of years. Based on these data, can you conclude there is a relationship between the number of new productions in a season and the attendance? (20 pts) No. of new productions 54 67 60 54 61 60 50 37 Attendance (millions) 7.4 8.2 7.1 8.8 9.6 11 8.4 7.4 Draw the scatter plot for the variables. (5 of the 20 pts) Compute the value of the correlation coefficient r . State the hypotheses. Test the significance of the correlation coefficient at ? = 0.05. Make the decision to reject or not reject the null hypothesis; which tells you whether or not a regression analysis is to be done and a regression line plotted on the scatter chart. r = ________ H 0 : ________ n = ________ H 1 : ________ d.f. = ________ C.V. = ________ Chapter 11 A survey of why people purchased a Ford during a certain model year is reported below. (15 pts) Reason Brand Loyalty Made in USA Manufacturers Reputation Number 26 18 28 At ? = 0.05, test the claim that the number of responses is equally distributed. State the hypotheses and identify the claim. Find the critical value. Compute the test value. Make the decision. Summarize the results. H 0 : H 1 : C.V. = ______________ d.f. = ____________ E = ______________ ?² = ? (O-E) 2 / E = ______________________ Essay: Write out (in a paragraph or two each), the basic concepts of descriptive statistics and inferential statistics and how they are used. (15 pts). Assignment: Statistical Functions Calculations Get a 10 % discount on an order above $ 100 Use the following coupon code : NURSING10