The following data represent the dividend yields (in percent) of a random sample of 28 publicly traded stocks. Complete parts (a) to It (4) (a) Compute the five-number summary The five-number summary is 3.44 (Round to two decimal places as needed. Use ascending order.) 0.71 0.34 2.98 0.11 0 0.11 3.44 0 2.73 2.52 0.53 2.81 2.57 0.39 1.06 2.96 3.03 2.82 0.53 0 0.23 0.76 2.35 0.14 121 0.31 0 226
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- Find the mean hourly cost when the cell phone described above is used for 240 minutes.Find the positive geometric mean between 4 and 64.John Kittle, an independent insurance agent, uses a five-year moving average to forecast the number of claims made in a single year for one of the large insurance companies he sells for. He has just discovered that a clerk in his employ incorrectly entered the number of claims made four years ago as 1,400 when it should have been 1,200.a. What adjustment should Mr. Kittle make in next year’s forecast to take into account the corrected value of the number of claims four years ago?b. Suppose that Mr. Kittle used simple exponential smoothing with a = .2instead of moving averages to determine his forecast. What adjustment is now required in next year’s forecast? (Note that you do not need to know the value of the forecast for next year in order to solve this problem.)
- Community Hospital began the year 2019, a non-leapyear, with 102 beds. By March 1st, it had expanded the number of beds to 116. In April through June, the hospitalreported 120 beds, which increased to 124 beds in Julythrough October. Finally, the hospital completed itsexpansion process in November to end the year with 130beds. Use these data to answer the questions below. Roundto one decimal place.(i) Calculate the percentage of occupancy for each month.(ii) Calculate the percentage of occupancy for each quarter(January through March, April through June, July throughSeptember, and October through December).(iii) Calculate the percentage of occupancy for the year.The instructor of a discrete mathematics class gave two tests. Exactly one-third of the students received an A on the first test and 12.3% of the students received A's on both tests. What percent of the students who received an A on the first test also received an A on the second test? Enter a precise value (no rounding) below. Do not enter the percent sign.The following table shows a sample of room rates for a 100 room resort hotel in Nova Scotia for the time period Jan. 1 to Dec. 2003. Note that 1/1-7/3 means January 1 to March 7, 2003. Be sure to scroll down to see the bottom of the rate table. 2003 Room Rates A Oceanfront 1 double bed Oceanfront 2 double beds Oceanfront Effic, 2 double beds 2 room suite 3 double beds Oceanfront Suite 3 double beds Extra Person B C D E 1/1 - 7/3 75 85 105 120 140 5 8/3 30/3 125 135 155 175 200 8 31/3 - 31/5 85 115 130 150 5 1/6 -30/6 100 110 130 150 175 5 1/7 2/9 -1/9 -8/10 150 95 180 200 225 10 105 125 140 165 7 9/10 -1/12 85 95 115 130 5 2/12 -20/12 75 85 105 120 140 5 21/12 - 31/12 125 135 155 175 200 10 IMPORTANT: Please omit the dollar signs in all answers. Note: Suites have 3 beds. a. For the 9 time periods, what was the mean extra person rate? b. (i) This hotel has 20 type A rooms, 15 type B, 30 type C, 25 type D and the remainder are type E. If the hotel was fully booked (with no extra people…
- The "Dogs of the Dow" are the stocks listed on the Dow with the highest dividend yield. The following table shows the top ten stocks of the "Dogs of the Dow" list for 2015, based on their performance the preceding year. HINT [See Example 2.] Symbol Company Price ($) Yield Source: www.dogsofthedow.com. AT&T 33.59 5.48% VZ Verizon 46.78 4.70% CVX Chevron 112.18 3.82% MCD McDonald's 93.70 3.63% PFE Pfizer 31.15 3.60% GE General Electric 25.27 3.48% MRK Merck 56.79 3.17% CAT Caterpillar 91.53 3.06% Хом ExxonMobil 92.45 2.99% KO Соса-Cola 42.22 2.89% If you selected two of these stocks at random, what is the probability that both the stocks in your selection had yields of 3.5% or more?For the Texas Shipping Company, the monthly percentages of all shipments received on time over the past 12 months are 82, 86, 87, 89, 84, 85, 84, 86, 75, 95, 90, and 92. a. Construct a time series plot (you can include it in the work file question at the end, not here). Identify what type of pattern, if any, exists in the data? Compare the three-month moving average forecast with an exponential smoothing forecast for alpha= 0.25 and answer the following: b. MSE for 3-month moving average method c. MSE for exponential-smoothing method : d. Which method should be preferred? Answer "3-month MA" or "Exponential Smoothing": e. What is the forecast for next month using the preferred method?Compute a 95% CI for the mean age (in years). (Enter your answer using interval notation. Round your numerical values to two decimal places.) in years (b) Compute a 95% CI for the mean white blood count (in thousands) (use the variable named "First WBC (x 1000) following admission") following admission. (Enter your answer using interval notation. Round your numerical values to two decimal places.) thousands (c) Compute a 90% CI for the mean white blood count (in thousands) (use the variable named "First WBC (x 1000) following admission") following admission. (Enter your answer using interval notation. Round your numerical values to two decimal places.) thousands
- The other part of the question is: Determine 95% prediction interval for the time required by the customer described in part (c). Enter your answer in xx.xx format. Round the value to two decimals and use leading and trailing zero to exactly match the format. Include the negative sign (minus sign) if the answer is negative. Do not include plus sign in your response. For example, if the answer is +6.1563 then enter 06.16, if the answer is -0.54765 then enter -00.55 and if the answer is 6.1 then enter 06.10 The upper limit of the prediction interval is: The lower limit of the prediction interval is: Determine 99% confidence interval for the mean time required by customers similar to one described in part (c). Enter your answer in xx.xx format. Round the value to two decimals and use leading and trailing zero to exactly match the format. Include the negative sign (minus sign) if the answer is negative. Do not include plus sign in your response. For example, if the answer is…(c) About ___% won't approve of marriage equality. (Round to the nearest percent as needed.)please help me with this