Chapter 14, Problem 14.21P

Most vertebrate adult body sizes remain constant or increase throughout their lives.  Marine iguanas are different in that they can actually decrease in size, in periods of low food availability.  Examine the data set here, and test the hypothesis that on average across time, iguana length changed (increased) by 1 mm.  Paste your R code in the answer box, and tell me your conclusion.  Data is here: https://github.com/lisamanne/biostats_data/raw/main/Iguana_lengths.csv DATA- Tributary,Species_upstream,Species_downstream I��,14,19 Juta�,11,18 Japur�,8,8 Coari,5,7 Purus,10,16 Manacapuru,5,6 Negro,23,24 Madeira,29,30 Trombetas,19,16 Tapaj�s,16,20 Xingu,25,21 Tocantins,10,12

On December 17, 2007 baseball writer John Hickey wrote an article for the Seattle P-I about increases to ticket prices for Seattle Mariners games during the 2008 season. The article included a data set that listed the average ticket price for each MLB team, the league in which the team plays (AL or NL), the number of wins during the 2007 season and the cost per win (in dollars). The data for the 16 National League teams are shown below. team league  price    wins  cost/win Arizona Diamondbacks NL 19.68 90 35.40 Atlanta Braves NL 17.07 84 32.89 Chicago Cubs NL 34.30 85 65.33 Cincinnati Reds NL 17.90 72 40.32 Colorado Rockies NL 14.72 90 26.67 Florida Marlins NL 16.70 71 38.13 Houston Astros NL 26.66 73 59.11 Los Angeles Dodgers NL 20.09 82 34.64 Milwaukee Brewers NL 18.11 83 35.37 N.Y. Mets NL 25.28 88 46.56 Philadelphia Phillies   NL 26.73 89 48.69 Pittsburgh Pirates NL 17.08 68 40.67 San Diego Padres NL 20.83 89 38.15 San Francisco Giants NL 24.53 71…

Over the past 40 years, the percentage of homes in the United States with smoke detectorshas risen steadily and has plateaued at about 96% (national fire Protection associationwebsite, January, 2015). With this increase in the use of home smoke detectors, what hashappened to the death rate from home fires? The DATAfile SmokeDetectors contains17 years of data on the estimated percentage of homes with smoke detectors and the estimated home fire deaths per million of population.a. Do you expect a positive or negative relationship between smoke detector use anddeaths from home fires? Why or why not?

TV Viewing Times. Data from a sample of Americans yielded the following estimates of average TV  viewing time per month for all Americans 2 years old and older. The times are in hours and minutes; Q1 stands for first quarter. [SOURCE: The Cross-Platform Report, Quarter 1, 2011. Published by  The Nielsen Company, _c 2011.]

Consumer Reports is doing an article comparing refrigerators in their next issue. Some of the characteristics to be included in the report are the brand name and model; whether it has a top, bottom, or side‑by‑side freezer; the estimated energy consumption per year (kilowatts); whether or not it is Energy Star compliant; the width, depth, and height in inches; and both the freezer and refrigerator net capacity in cubic feet.   Is "annual energy consumption" a categorical variable, a quantitative variable, or an individual?   categorical variable individual quantitative variable None of the given options are correct.

The director of a nonprofit ballet company in a medium-sized city in a certain country is planning its next fundraising campaign. In recent years, the program has found the percentages of donors and gift levels given in the accompanying table. Develop a spreadsheet model to calculate the total amount donated based on this information if the company contacts 900 potential donors to donate at the $100 level or below E Click the icon to view the percentages of donors and gift levels. C..... 3 Philanthropist $5,000 11 =B3*C3 4 Producer's Circle $1,000 25 =B4*C4 5 Director's Circle $500 49 =B5 C5 6 Principal $100 8% =B6*C6*$B$9 7 Soloist $50 14% =B7*C7*SB$9 8. 9 Solicitations 900 10 Total Donations =SUM(D2:D7) Enter the values in the model. (Type integers or decimals. Do not round.) B D Average Number of Gifts 1 Gift Level Amount Donations 2 Benefactor $10,000 3 Philanthropist $5,000 11 4 Producer's Circle $1,000 25 5 Director's Circle $500 49 6 Principal $100 8% ns? 7 Soloist $50 14% 8. 9…

The sales manager of a large automotive parts distributor wants to estimate the total annual sales for each of the company’s regions. Five factors appear to be related to regional sales: the number of retail outlets in the region, the number of automobiles in the region registered as of April 1, the total personal income recorded in the first quarter of the year, the average age of the automobiles (years), and the number of sales supervisors in the region. The data for each region were gathered for last year. For example, see the following table. In region 1 there were 1,739 retail outlets stocking the company’s automotive parts, there were 9,270,000 registered automobiles in the region as of April 1, and so on. The region’s sales for that year were $37,702,000. constant outlet automobile reg income age bosses 37.702 1,739 9.27 85.4 3.5 9 24.196 1,221 5.86 60.7 5 5 32.055 1,846 8.81 68.1 4.4 7 3.611 120 3.81 20.2 4 5 17.625 1,096 10.31 33.8 3.5 7 45.919 2,290 11.62 95.1…

Create a side-by-side boxplot for vitamin D level vs. NewAge and a side- by-side boxplot for vitamin D level vs. country. Create a scatterplot to show the relationship between vitamin D level and Age. Compare these two side-by-side boxplots and the scatterplot and explain your findings. • Note: Write appropriate captions for the tables, graphs, and outputs.

Please do not give solution in image formate thanku.