10

32. DETAILS Prompt 0/1 Submissions Used 2-D. What is the standard deviation (in whole minutes) for the above flight? O 6400 23 533 12 80 25 O 24 Submit Answer MY NOTES Quantas Airlines quotes a flight time of 20 hours, 15 minutes for its flight from New York (JFK), USA to Sydney (SYD), Australia. Suppose that the actual flight time is uniformly distributed between 19 hours 35 minutes and 20 hours 55 minutes. ASK YOUR TEACHER

If a TV show has a rating of 8.0/16.0 what does it mean? а. 8% of all televisions in use at the time were tuned to that show, and 16% of all households with a TV were tuned to that show b. 50% of all households with a TV set were tuned to that show с. 8% of all households with a TV set were tuned to that show and 16% of all televisions in use at the time were tuned to that show d. 50% of all televisions in use at the time were tuned to that show

please give answer for 7, 8, and 9

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 ?

A quality inspector took five samples, each with four observations, for the length of timefor a chemical test to return a conclusive result. All values are in minutes. Use this informationto develop ONE control chart for the variable measure of time. Use formulas Unit 4 zoom filesto assist with your calculations. The process distribution standard deviation is known to be 0.02minute. Develop the chart with 3-sigma limits. i need the graph as well

DO NOT USE LAGRANGIAN

For all parts of this question, assume that the log of GDP per capita is normally distributed with a mean of 8.7 and standard deviation of 1.5. Step 2 of 4: What is the probability that a country picked at random has income per capita > $2,000? Answer Keypad Keyboard Shortcuts 0.7327 O 2327 2673 0.7673 O O O

Q. 2. Explain why there must be mistake in the following statement: "A quality control engineer claims that the probability that a large consignmen of glass bricks contians 0, 1, 2, 3, 4 or 5 defectives are 0-11%; 0-23, 0-37, 0-26, 0-009 and 0-05 respectively".

Suppose X is a random variable with possible values -2,3 and 1 and with respective probabilities 0.22, 0.35, and 0.43 then the mean and standard deviation of X, respectively, are: of a. 1.04 and 1.838 O b. 1.04 and 1.876 O c. 0.667 and 1.876 d. 1.04 and 0.3733 O e. 0.667 and 0.3733

A courier company guarantees its customers that the average time to pick up their packages is 20 minutes with a tolerance of 4 minutes. The company collected data on 30 actual arrival times and determined that the average is 20 minutes and standard deviation of this sample was 1 minutes. What is the Cpk of this package service process? O Less than 1 1.33 O Great than 2 01

FIVE. Which of the following is true about standard deviation?     The first step in calculating the standard deviation is calculating the square root.   The second step in calculating the standard deviation is to subtract each measurement from the intermediate value and then square that difference.   The last step in calculating the standard deviation is to sum the squared values and divide by the number of values minus one.   Standard deviation is a type of average where the positive and negative numbers sum to zero.   The amount of difference of the measurements from the central value is called the sample standard deviation.

.A forecasting method has produced the following over the past five months Actual 140 Forecast 154 140 112 140 84 126 112 84 112 ?What is the mean absolute deviation 14-O 16.8 2.8- 116.2

The 2018 statistics shows that the average life expectancy of females in Canada has risen to 83.9 years. Assuming the standard 1 deviation of their life expectancy was 7.4 yoars, determine the minimum percentage of females in Canada whose life expectancy was between 75.02 and 92.78 years. Type your numerical answer here. Numbers only

(26) A company is interested in determining whether the average life of HP and Epson printers is different. A sample of HP and Epson printers result in the following: HP: average life-7 years Standard deviation -2 years n- 10 Epson: average life - 5.5 years Standard deviation -2.5 yearsn-8 At a-.05, is there a statistically significant difference between the longevity of the two brands of printers?

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

Question: The average hourly wage of a sample of 150 workers in a plant 'A' was Dollar 2.56 with a standard deviation of Dollar 1-08. The average hourly wage of a sample of 200 workers in plant 'B' was Dollar 2.87 with a standard deviation of Dollar 1.28. Can an applicant safely assume that the hourly wages paid by plant 'B' are higher than those paid by plant 'A'?

After every score in a sample is divided by 3, the mean is calculated and found to be M= 7. What was the mean for the original scores? 63 Cannot be determined from the information given O 21

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

Tom is a salesman.  The following are the details regarding source of his income.           Base weekly salary = $350             Sales commission = 12% of price the item sold         Average price of items sold = $270             Average weekly number of items sold, E(x) = 30             Standard deviation of number of items sold per week, sd(x) = 6.8             Number of weeks a year Tom works = 48       25 Tom's average annual earnings is ________. a $65,042       b $63,456       c $61,908       d $60,398

Use the following information to answer the next two questions: A service station has a pump that distributes diesel fuel to automobiles. The station owner estimates that only about 4.8 cars use the diesel pump every 2 hours. What is the probability that 5 cars will arrive to use this pump during a two-hour period? O 65.1% O 32.24% O 13.5% O 22.26% O 17.5% QUESTION 32 What is the probability that one or no cars will arrive to use the diesel pump during a half-hour period? O 4.77% O 49.3% O 66.26% O 30.12% O 36.14%

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

#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"?

where did you get 0.1235 from??

Use 7.3

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

If a typist makes errors at random at a mean rate of 4 per page, then the probability of making at most 6 errors on two pages is: 0.3134 O 0.8488 O 0.9788 O None of these

The height (in inches) of a random sample of 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   9 Sum of squared deviations:  ∑(x − x̅)² = _______. a 555.83         b 573.02         c 590.74         d 609.01

53. The annual demand for Prizdol, a prescription drugmanufactured and marketed by the NuFeel Company,is normally distributed with mean 50,000 and standarddeviation 12,000. Assume that demand during each ofthe next 10 years is an independent random numberfrom this distribution. NuFeel needs to determine howlarge a Prizdol plant to build to maximize its expectedprofit over the next 10 years. If the company builds aplant that can produce x units of Prizdol per year, it willcost $16 for each of these x units. NuFeel will produceonly the amount demanded each year, and each unit ofPrizdol produced will sell for $3.70. Each unit of Prizdol produced incurs a variable production cost of $0.20.It costs $0.40 per year to operate a unit of capacity.a. Among the capacity levels of 30,000, 35,000,40,000, 45,000, 50,000, 55,000, and 60,000 unitsper year, which level maximizes expected profit?Use simulation to answer this question.b. Using the capacity from your answer to part a,NuFeel can be 95%…

The graph shows the distribution of the lengths (in seconds) of videos on a popular video-streaming site. The distribution is approximately Normal, with a mean of 264 seconds and a standard deviation of 75 seconds. Streaming Videos -36 39 114 189 264 339 414 489 564 Length (Seconds) What percentage of videos on the streaming site are between 39 and 189 seconds? 0.15% 15.85% O 16% 34%