The following data represent the dividend yields (in percent) of a random sample of 28 publicly traded stocks. Compute the five-number summary for the data. 2.03 0.24 0.66 0.92 0.43 2.95 1.34 1.21 2.98 0.12 0.11 1.84 0.12 2.92 0.01 2.96 0.56 1.06 0.04 2.99 3.57 0.62 0.33 2.27 The five-number summary is.. II (Round to three decimal places as needed. Use ascending order.)
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Five number summary consists of minimum, first quartile, middle , third quartile and maximum.
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- An investor is looking at past trends for three plans comparing dividends paid per share. She collects sample data from each plan to compare the average dividends paid per share. Let ? = 0.05. Plan 1 Plan 2 Plan 3 1.28 1.00 0.35 1.55 1.19 1.15 1.86 1.25 0.15 1.95 3.17 1.00 0.75 1.46 0.30 2.68 0.60 0.61 2.03 1.31 1.04 Groups Count Average Variance Plan 1 7 1.728571 0.375514 Plan 2 7 1.425714 0.667762 Plan 3 7 0.657143 0.164724 Source of Variation Sum of Squares df Mean Squares F P F crit Between Groups 4.2709 2 2.1354 5.3033 0.0155 3.5546 Within Groups 7.2480 18 0.4027 Total 11.5189 20 (a) What is the next step in the one-way ANOVA? There is not enough information, so collect more data.Stop, the results were not significant. The Tukey-Kramer post hoc test is not needed. Stop, the results were significant. The Tukey-Kramer post hoc test is not needed.Continue to the Tukey-Kramer post hoc test, as the results were…A stock analyst wondered whether the mean rate of return of financial, energy and utility stocks differed over the past 5 years. He obtained a simple random sample of eight companies from each of the three sectors and obtained the 5-year rates of return shown in the following table (in percents): Financial Energy Utilities 10.76 12.72 11.88 15.05 13.91 5.86 17.01 6.43 13.46 5.07 11.19 9.90 19.50 18.79 3.95 8.16 20.73 3.44 10.38 9.60 7.11 6.75 17.40 15.70 Source: Morningstar.com Required: (a) State the null and alternative hypothesis. (b) Are the mean rates of return different at the alpha = 0.05 level of significance? Please explain your answer, citing numeric and other evidence in support of your response.Suppose that a random sample or size n = 5 was selected from the vineyard properties for sale in Sonoma County, California, in each of 3 years. The following data are consistent with summary information on price per acre (in dollars, rounded to the nearest thousand) for disease resistant grape vineyards in Sonoma County ( Wines and Vines, November 1999). l 996 30,000 34,000 36,000 38,000 40,000 1997 30,000 35,000 37,000 38,000 40,000 1998 40,000 41,000 43,000 44,000 50,000 a. Construct boxplots for each of the 3years on a common axis, and label each by year. Comment on the similarities and b. Carry out an ANOVA to determine whether there is evidence to support the claim that the mean price per acre for vineyard land in Sonoma County was not the same for the 3years Use a significance level of 0.05 for your test.
- The following data give the numbers of orders received for a sample of 30 items at the Time-saver Mail Order Company.34 44 31 52 41 47 38 35 32 3928 24 46 41 49 53 57 33 27 3730 27 45 38 34 46 36 30 47 50 1.3 Calculate the coefficient of variation and interpret the value obtained.The following data represent the cost of electricity during July 2006 for a random sample of 50 one-bedroom apartments in a large city: Raw Data Utility Charges ($) 96 171 202 178 147 102 153 197 127 82 157 185 90 116 172 111 148 213 130 165 141 149 206 175 123 128 144 168 109 167 95 163 150 154 130 143 187 166 139 149 108 119 183 151 114 135 191 137 129 158 Form a frequency distribution and a percentage distribution that have class intervals with the upper class limits $99, $119, and so on. (Hint: It means that the first class can be expressed as $80 but less than $100, where $100 is not included in the first class but the second class.)…A stock analyst wondered whether the mean rate of return of financial, energy, and utility stocks differed over the past 5 years. He obtained a simple random sample of eight companies from each of the three sectors and obtained the 5-year rates of return shown in the accompanying table (in percent). financial energy utilities 10.76 12.89 11.88 15.05 13.96 5.86 17.21 6.43 13.67 5.07 11.23 9.90 19.50 18.93 3.95 8.16 20.73 3.44 10.38 9.60 7.11 6.52 17.40 15.70 1. Are the mean rates of return different at the α=0.05 level of significance? Use technology to find the F-test statistic for this data set. F0=______? (Round to two decimal places as needed.) 2. Determine the P-value and state the appropriate conclusion below. Since the P-value is _____? there is not enough evidence to…
- A stock analyst wondered whether the mean rate of return of financial, energy, and utility stocks differed over the past 5 years. He obtained a simple random sample of eight companies from each of the three sectors and obtained the 5-year rates of return shown in the following table (in percent): Financial Energy Utilities 10.76 12.72 11.88 15.05 13.91 5.86 17.01 6.43 13.46 5.07 11.19 9.9 19.50 18.79 3.95 8.16 20.73 3.44 10.38 9.60 7.11 6.75 17.40 15.70 (a) State the null and alternative hypotheses. (b) Verify that the requirements to use the one-way ANOVA procedure are satisfied. Normal probability plots indicate that the sample data come from normal populations. (c) Are the mean rates of return different at the a=0.05 level of significance?the following data represent the tie betwee eruption (in seconds) for a random sample of 15 eruptions at the old faithful geyser in california. is there reason to believe the time between eruptions is normally distributed? provide the graph 678 708 708 714 716 719 722 723 726 728 730 735 735 736 736c. The proportion of buyers who actually make a purchase appears to be relatively constant over time. In 2015, among a sample of 389 on-line buyers, 159 purchased merchandise. In 2019, for a sample of 301 on-line buyers, 138 purchased merchandise. At the .05 level of significance, did the proportion of on-line buyers change from 2015 to 2019?
- The table below shows the average annual tuition and fees at private and public 4-year colleges and universities for the school years 2009-2010 through 2014-2015. (Source: National Center for Education Statistics). Year Private Public2009-2010 31,448 15,0142010-2011 32,617 15,9182011-2012 33,674 16,8052012-2013 35,074 17,4742013-2014 36,193 18,3722014-2015 37,385 19,203 a. Using 1 for 2009-2010, 2 for 2010-2011, and so on, find the equation of the regression line for the tuition and fees at private 4-year colleges and universities, based on the year. b. Using 1 for 2009-2010, 2 for 2010-2011, and so on, find the correlation coefficient for the tuition and fees at public 4-year colleges and universities, based on the year.Suppose that a random sample of size n = 5 was selected from the vineyard properties for sale in Sonoma County, California in each of 3 years. Suppose the following data are consistent with summary information on price per acre (in dollars, rounded to the nearest thousand) for disease-resistant grape vineyards in Sonoma County: Year Observations 1996 30,000 32,000 34,000 39,000 40,000 1997 30,000 33,000 35,000 39,000 40,000 1998 40,000 43,000 45,000 49,000 50,000 Calculate the mean square for treatments (MSTr), the mean square error (MSE), and the value for the F statistic. (Round your answers for MSTr and MSE to the nearest integer and round your answer for F to two decimal places.) MSTr=MSE=F=The 2006 Statistical Abstract of the United States reports on a survey that asked a national sample of 80,000 American households about pet ownership. Suppose (for now) that one-third of all American households own a pet cat. Still supposing that one-third of all American households own a pet cat, between what two values do you expect 95% of all sample proportions to fall?