4 61.7 1985 61.8 1986 62.0 1987 62.7 1990 62.8 1992 62.9

The following table gives the average monthly exchange rate between the U.S. dollar and the euro for 2009. It shows that 1 euro was equivalent to 1.289 U.S. dollars in January 2009. Develop a trend line that could be used to predict the exchange rate for 2010. Use this model to predict the exchange rate for January 2010 and February 2010. MONTH ______________________ EXCHANGE RATE January ....................................... 1.289 February ...................................... 1.324 March ......................................... 1.321 April .......................................... 1.317 May ........................................... 1.280 June ........................................... 1.254 July ........................................... 1.230 August ....................................... 1.240 September ................................... 1.287 October ..................................... 1.298 November .................................. 1.283 December…

Part 2: The graph below represents the relative frequency of heads that occur (number of heads divided by the total number of tosses) versus the number of times the coin was tossed for the first io00 tosses. The table shows these values, and in addition, the total number of heads for the 991st to 1000th tosses. Use this information to answer the questions below. Long Term Relative Frequency 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 100 200 300 400 500 600 700 800 900 1000 Number of Coin Flips Long Term Relative Frequency Number of 991 992 993 994 995 996 997 998 999 1000 Tosses Number of Heads 511 512 513 513 514 515 515 515 515 515 Relative Frequency of Heads 0.5156 0.5161 0.5166 0.5161 0.5166 0.5171 0.5165 0.516 0.5155 0.515 d) Since the coin is fair, on average, approximately half of the tosses should be heads. So when the coin is tossed 1000 times approximately 500 of the tosses should be heads. What is the actual number of heads for 1000 tosses as given by the chart? e) What is the…

Which of the following best describes the trend of the graph? Scatterplot of Salary vs Start Year 100 80 60 40 20 1985 1990 1995 2000 2005 2010 Start Year There is a positive linear trend. There is a negative linear trend. O There is no linear trend. Salary (in thousands of dollars per year)