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#14 Control Charts: Yellowstone National Park Yellowstone Park Medical Services provides emergency health care for park visitors. The average number of visitors treated is 21.7 per day during the summer period. The estimated standard deviation is 4.2 visitors. a. For a 10-day summer period, the following data show the number of visitors treated each day. Day 1 2 3 4 5 6 7 8 9 10 # 25 19 17 15 20 24 30 19 16 23 Make a control chart for the daily number of visitors treated and plot the data on the control chart. Does the data indicate that the number visitors treated is "in Control"? b. For another 10-day summer period, the following data saw obtained. Day 1 2 3 4 5 6 7 8 # 20 15 12 21 24 28 32 36 96 35 10 37 17 Make a control chart for the daily number of visitors treated and plot the data on the control chart. Does the data indicate that the number visitors treated is "in Control"?

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Suppose you are shopping online for a new toy for your dog. As you look at the product reviews, you see the following distribution of ratings. Use this table for questions 2-5. Stars 5 4 3 st 2 IN 1 Frequency 9 3 2 1 5

please help me with this question. Thank you

Calculate the mean for each of the 4 quarters, stating the formula you would use for determining the mean for the first quarter’s forecasted revenue.

Bill's Bookstore is tracking its monthly demand for textbooks and has seen the following demand pattern. Historical forecasts are also included. MONTH FORECASTED DEMAND ACTUAL DEMAND April 150 165 May 220 210 June 215 200 July 245 250 August 205 225 Assess Bill's performance for the forecast in the table above using the Mean Absolute Deviation (MAD). Only use the data for the months of April through August to calculate the MAD.

QUESTION 3 Annual Fund Returns Over the Past 10 Years Year Return (%) 4.5 6.0 1.5 -20 3 4 15 6 7 19 20 0.0 45 3.5 2.5 5.5 4.0 10 Calculate the geometric mean retur over the 10 years. Give your answer in percent, rounded to two decimal places, so in the format X.XX. Hint, the number zero is not used in the correct answer

Solve calculation

13. Find the mean, mode, and median of the following sets of data. 82. 23, 59, 94, 70, 26, 32, 83, 87, 94, 32 MEAN MODE MEDIAN 67, 70, 49, 95, 40, 97, 62, 54, 42 MEAN MODE MEDIAN 83, 93, 77, 33, 62, 28, 23 MEAN MODE MEDIAN 86, 13, 60, 55, 61,97, 30, 98, 79, 52 MEAN MODE MEDIAN 31, 92, 25, 69, 80, 31, 29 MEAN MODE MEDIAN 24, 22, 32, 59, 99, 59, 76, 83, 21, 95 MEAN MODE MEDIAN áciting a 14. The dato

(Ch7) If the mean time between in-flight aircraft engine shutdowns is 12,500 operating hours, what is the 90 percentile on the distribution of the number of hours until the next shutdown? (hint: convert the mean time between events to the mean events per hour λ, then apply inverse exponential) Question 7Select one: a. 20,180 hours   b. 18,724 hours c. 23,733 hours d. 28,782 hours

calculate the missing values and show the calculation

Calculate the mean of the projected annual revenues of the 7 countries. Show full working for the mean calculation.

6. Given the following data set,25, 16, 18,16,20,20,24,30,20,40. What is the mean, median and mode.       22.9,20,20       20,26,21       26,20,21

Given the following data, find the weight that represents the 31st percentile. Weights of Newborn Babies 7.9 7.6 6.5 7.9 7.4 8.5 6.2 6.9 9.2 7.8 00 7.4 7.0 6.5 7.9 8.2

Economics topic: Initially there were 9 workers, all being paid a uniform wage. Later a 10th worker is added whose rate is USD 20 less than for the others. Compute the wage: (i) the effect on the mean wage. (ii) standard deviation of wages for the group of 10 workers.

Calculate standard deviation Marks: 0-10,10-20,20-30,30-40,40-50 Frequency :10,15,10,10,5

Do not use software on this question.  Use pencil, paper, and your calculator to calculate the values of both the mean and the median for this sample data. Here are the snowfall amounts for 12 more-than-a-trace snowfalls for this February 2020 and March 2020 (rounded to the nearest inch): 4  0  6  6  0  6  0  9  2  3  1  2   Using just the values for the median and the mean, is the distribution symmetric or skewed? If skewed, which direction? A. Skewed left since mean < median B. Symmetric since mean is about the same as the median C. Skewed left since mean > median D. Skewed right since mean < median E. Skewed right since mean > median

Paw Patrol Inc. manufactures toys for kids from 1 to 10 years old. The summary of toy sales by month in 2017 and 2018 is as follows: Dt April May 2018 18600 Period Demand 18716 June 19235 2017 September 19400 July August 19500 October 18300 19753 November 17200 September 18320 December 14998 October 17652 2018 January February March 19800 November 16200 19555 December 15563 19800 What is the Mean Absolute Deviation (MAD), when using the weighted 4-period moving average technique? Use weights of 0.6, 0.2, 0.1, and 0.1 for the most recent period, the second most recent period, the third most recent period, and the fourth most recent period, respectively. O 5445 O 1256 O 1555 O 4450 O 1140

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What is meant by the efficiency of an estimator? Which estimator is knownas BLUE?

Compute the percentage changes for the following (enter your responses as integers): Initial Value 100 50 10 New Value Percentage Change 112 54.0 12.5

5. The weight of bags of luggage of 40 Summer Cruise customers were recorded in the table below. Weight (kg) Frequency 21-25 6 26-30 8 31-35 13 36-40 9 41-45 4 Using the above table, calculate the a) the mean weight b) the standard deviation

ll by adding 5 to each of the numbers in the set 3.6 117 7 1 we obtain the set 8, 116, 12, 10 Show that the two sets have the standard deviation Same deviation but different means How are the mean related ?

Compute σ, the standard deviation of x.

Question 1. Using the following information and the concept of 'z-score', please calculate mean. Z-score: 2, value: 150, standard deviation: 20 Question 2. Using the following information and the concept of 'z-score', please calculate standard deviation. Z-score: 1, value: 120, mean: 115 Question 3. Using the following information and the concept of 'z-score', please calculate z-score. Value: 120, mean: 90, standard deviation: 10

300 word sammary of minorio report reading.

Use the following cell phone airport data speeds (Mbps) from a particular network. Find the percentile corresponding to the data speed 0.6 Mbps. 0.4 0.4 0.1 0.6 0.2 0.6 0.7 0.8 1.6 4.8 9.7 1.9 5.4 10.7 0.3 0.6 2.2 5.4 10.9 Percentile of 0.6= (Round to the nearest whole number as needed.) 0.3 0.7 2.5 5.5 11.6 2.6 5.8 12.5 C 2.7 6.2 13.5 0.4 0.9 2.8 6.9 13.8 0.5 1.2 2.8 8.6 14.1 0.5 1.5 A 3.7 8.8 15.5 0.5 1.5 3.9 9.6 28.3

Director Very Busy needs to allocate time this week for office appointments, so he needs to forecast the number of employees who will seek appointments. The director has gathered the following time series data recently Period Employee Appointments 4 weeks ago 95 3 weeks ago 80 2 week ago 65 last week 50

The height (in inches) of a random sample of 28 players in NCAA Division 1 basketball teams is shown to the left.    x 75 80 75 87 77 77 67 83 77 80 73 82 73 71 80 76 72 78 68 74 74 72 76 86 77 77 78   8 Sum of deviations:  ∑(x − x̅) = _______ a -0.5       b 0       c 0.5       d 1

Find the mean absolute deviation Find the mean absolute deviation 87, 75, 85, 77, 74, 82, 90, 88, 79, 81 15, 17, 15, 17, 21, 17, 15, 23, 20, 18 Positive Positive Data Mean Difference Value Data Mean Difference Value Sum: Count Sum: Count: Мean Absolute Deviation: Mean of the The average of the "Positive Value" The avera Absolute Deviation: "Positive Value" column column DELL

Prepare the scatter diagram, clearly showing any outliers. list detailed how to prepare the diagram