Early Morning Delivery Service guarantees delivery of small packages by 10:30 A.M. Of course, some of the packages are notdelivered by 10:30 A.M. For a sample of 230 packages delivered each of the last 15 working days, the following numbers of packageswere delivered after the deadline: 10, 19, 6, 11, 13, 7, 3, 2, 6, 3, 3, 4, 7, 8, and 6. (Leave no cells blank - be certain to enter "0" whereverrequired. Round your answers to 3 decimal places.)Click here for the Excel Data Filea. Determine the mean proportion of packages delivered after 10:30 A.M.Mean proportionb. Determine the control limits for the proportion of packages delivered after 10:30 A.M.p(1-p)2303LCLUCLWere any of the sampled days out of control?NoYes c. If 14 packages out of 230 in the sample were delivered after 10:30 A.M. today, is this sample within the control limits?NoYes

Given: Sample size, n is 230 Number of samples =15 No. of packages deliver after deadline 10…

Answered: a. Determine the mean proportion of…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Statistics Question
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130 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below: # of times floss per week Frequency Relative Frequency Cumulative Frequency 18 0.1385 18 1 21 0.1615 39 2 20 59 3 15 0.1154 4 16 0.1231 90 10 0.0769 100 6 0.1231 116 7 14 0.1077 130 a. Complete the table (Use 4 decimal places when applicable) b. What is the cumulative relative frequency for flossing 5 times per week?
You decide that you want to make sure your estimate from part a is correct. You go out and gather 10 simple random samples of 25 people in your school and calculate the proportion of students within each sample whose Amazon packages arrive within two business days of ordering. The proportion of customers that receive their packages within two days of ordering are given below. 0.70, 0.75, 0.6, 0.95, 0.90, 0.73, 0.87, 0.86, 0.92, 0.97 Explain why all of the sample proportions are not the same.
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14. The range is defined as the: a. variability of the data with reference to extreme scores. b. the variability of the data with reference to the mean. c. variability of the data in terms of how many subjects achieved each value of the variable. d. SS/n
130 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below: # of times floss per week 0 Frequency Relative Frequency 17 19 17 19 9 15 0.1308 0.1462 0.1308 Cumulative Frequency 1 2 3 4 5 6 7 19 a. Complete the table (Use 4 decimal places when applicable) b. What is the cumulative relative frequency for flossing 4 times per week? 0.0692 0.1154 0.1154 0.1462 17 36 53 81 96 111 130 %
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a. Determine the mean proportion of packages delivered after 10:30 A.M. Mean proportion b. Determine the control limits for the proportion of packages delivered after 10:30 A.M. 3. P(1-P) 230 LCL UCL Were any of the sampled days out of control?