The numbers of guests (in hundreds) who checked-in to a popular resort for the duration of three years are shown in the following table: Year 2019 2020 2021 First 80 100 Number of guests (hundreds) Quarter Second 87 111 135 Third 62 74 98 Fourth 107 151 175
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Calculate the average quarterly variations using the additive model.
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- In horse racing, a “trifecta” occurs when a bettor wins by selecting the first three finishers in the exact order (1 St place, 2nd place, and 3rd place). How many different trifectas are possible if there are 14 horses in a race?Is the number of games won by a major league baseball team in a season related to the team batting average? The table below shows the number of games won and the batting average (in thousandths) of 8 teams. Team Games Won Batting Average 1 9797 269269 2 9595 275275 3 8686 273273 4 9999 261261 5 6464 285285 6 118118 260260 7 8787 274274 8 8888 280280 Using games won as the explanatory variable ?x, compute the correlation coefficientIs the number of games won by a major league baseball team in a season related to the team batting average? The table below shows the number of games won and the batting average (in thousandths) of 8 teams. Team Games Won Batting Average 1 8383 289289 2 116116 290290 3 101101 287287 4 8181 262262 5 110110 288288 6 119119 269269 7 6060 268268 8 6161 280280 Using games won as the explanatory variable xx, do the following: (a) The correlation coefficient is r=r= . (b) The equation of the least squares line is y^=y^=
- The average consumer unit spent $1874 on apparel and services in2006.That same year, 25 consumer units in the North-east had the following annual expenditures, in dollars, on apparel and services 1417, 1595, 2158, 1820, 1411, 2361, 2371, 2330, 1749, 1872, 2826, 2167, 2304, 1998, 2582, 1982, 1903, 2405, 1660, 2150, 2128, 1889, 2251, 2340, 1850 At the 5% significance level, do the data provide sufficient evidence to conclude that the 2006 mean annual expenditure on apparel and services for consumer units in the Northeast differed from the national mean of $1874?The following stemplot displays the number of forest fires (the stem is in tens of thousands) that occurred each year over the period from 1980 to 2010.6 | 123777797 | 012233344455688 | 035589 | 069How many data values are in this data set?How many fires were in the year with the greatest number of fires from 1980 to 2010?Listed below are the annual hig points of the Dow Jones Industrial Average for a recent sequence of years. The median is 969. Determine if the data occur randomly above and below the median. 969 995 943 985 969 842 951 1036 1052 892 a. In the boxes below each data value, Place an "A" if the value is above the median, a "B" if it is below the median, and a "-" if it equals the median. 969 995 943 985 969 842 951 1036 1052 892 nothing nothing nothing nothing nothing nothing nothing nothing nothing nothing b. If n 1 = # of A's in the sequence, find its value: n 1 = nothing c. If n 2 = # of B's in the sequence, find its value: n 2 = nothing d. Find G, the number of runs: G = nothing e. Find the critical values from Table A-10: Lower critical value = nothing Upper critical value = nothing f. State the technical conclusion: A. Do not…
- Is the number of games won by a major league baseball team in a season related to the team batting average? The table below shows the number of games won and the batting average (in thousandths) of 8 teams. Team Games Won Batting Average 1 6060 259259 2 120120 277277 3 8989 263263 4 101101 288288 5 8585 287287 6 109109 270270 7 7777 272272 8 106106 290290 Using games won as the explanatory variable xx, do the following: (a) The correlation coefficient is r=r= . (b) The equation of the least squares line is y^=y^= . SpeakWhat is the cumulative frequency for the fourth classListed below are the numbers of words spoken in a day by each member of six different couples. Use a 0.05 significant level to test the claim that amount couples, males speak more words in a day than females. Male 5638 21319 17572 16429 46978 25835 Female 5198 21661 19624 13397 41553 28667
- The racial/ethnic diversity of post high school students enrolled at MVCC during the fall 2020 semester is given below. Racial/Ethnic Diversity of Post High School Students Race/Ethnicity Percent* American Indian or Alaska Native 0.4% Asian 5.3% Black or African American 9.6% Hispanic or Latino 9.6% Two or more races 2.8% Native Hawaiian or Pacific Islander <0.1% Non-Resident Alien 0.5% Unknown 1.5% White 70.2% (*Percentages may not total 100 due to rounding) What is the race/ethnicity of the majority of students at MVCC? What total percent of students were either Black or African American or Hispanic or Latino? There were 3,444 students enrolled at MVCC at the time of the study. How many (not percent) students were Asian? (The answer must be a whole number.)The following table shows the approximate number of wireless telephone subscriptions in a certain country for recent years.The following table gives the 2012 total payroll (in millions of dollars) and the percentage of games won during the 2012 season by each of the National League baseball teams. Team Total Payroll (millions of dollars) Percentage of Games Won Arizona Diamondbacks 83 46 Atlanta Braves 89 35 Chicago Cubs 110 57 Cincinnati Reds 111 34 Colorado Rockies 93 39 Los Angeles Dodgers 264 51 Miami Marlins 59 38 Milwaukee Brewers 99 39 New York Mets 95 53 Philadelphia Phillies 127 33 Pittsburgh Pirates 82 58 San Diego Padres 92 40 San Francisco Giants 164 46 St. Louis Cardinals 112 59 Washington Nationals 156 45 Compute the coefficient of determination, ρ2, with percentage of games won as the dependent variable. (Note that this data set belongs to a population.) Carry out all calculations exactly, and round the final answer to three decimal places.