Mortgage rates: Following are interest rates (annual percentage rates) for a 30-year fixed rate mortgage froma sample of lenders in Macon, Georgia for one day. It is reasonable to assume that the population is approximately normal. 4.753 4.374 4.175 4.676 4.424 4.228 4.124 4.254 3.955 4.196 4.291 Send data te Excel Part: 0/ 2 Part 1 of 2 (a) Construct an 80% confidence interval for the mean rate. Round the answer to at least four decimal places. An 80% confidence interval for the mean rate is

Mortgage rates: Following are interest rates (annual percentage rates) for a 30-year fixed rate mortgage froma sample of lenders in Macon, Georgia for one day. It is reasonable to assume that the population is approximately normal. 4.753 4.374 4.175 4.676 4.424 4.228 4.124 4.254 3.955 4.196 4.291 Send data te Excel Part: 0/ 2 Part 1 of 2 (a) Construct an 80% confidence interval for the mean rate. Round the answer to at least four decimal places. An 80% confidence interval for the mean rate is

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Repair revenues from labor costs of the bicycle shop are given below: X          7.1       2.2       7.2       3.1       3.3       3.5       7.7       4.1       6.8       4.7       5.3       5.5       6.1             Y          3.9       1.7       3.7       1.5       2.2       1.4       4.9       2.5       4.5       3.4       2.3       3.6       3.2 Determine whether there is significant relationship at 0.05 level of significance Predict the value of Y if x are 2.7 and 1.5.
Please help with the corrected answers in details: The following time series shows the sales of a particular product over the past 12 months. Month Sales 1 105 2 135 3 120 4 105 5 90 6 120 7 145 8 140 9 100 10 80 11 100 12 110 What type of pattern exists in the data? The data appear to follow a trend pattern. The data appear to follow a horizontal pattern.     The data appear to follow a cyclical pattern.The data appear to follow a seasonal pattern. (b) Use ? = 0.2 to compute the exponential smoothing values for the time series. (Round your answers to two decimal places.) Month t Time Series Value Yt Forecast Ft 1 105 2 135 3 120 4 105 5 90 6 120 7 145 8 140 9 100 10 80 11 100 12 110 (c) Use a smoothing constant of ? = 0.4 to compute the exponential smoothing forecasts. (Round your answers to two decimal places.) Month t Time Series Value Yt Forecast Ft 1 105 2 135…
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The Bank of Canada is interested in studying the relationship between mortgage rates and median home prices. The data is provided below Year interest rate (%) Median home price 1988 10.30 $183,800 1989 10.30 $183,200 1990 10.10 $174,900 1991 9.30 $173,500 1992 8.40 $172,900 1993 7.30 $173,200 1994 8.40 $173,200 1995 7.90 $169,700 1996 7.60 $174,500 1997 7.60 $177,900 1998 6.90 $188,100 1999 7.40 $203,200 2000 8.10 $230,200 2001 7.00 $258,200 2002 6.50 $309,800 2003 5.80 $329,800 2004 5.80 $431,000 2005 5.80 $515,000 2006 6.40 $537,000 2007 6.30 $496,000 2008 6.00 $352,000 2009 5.00 $232,000 2010 4.70 $291,700 2011 4.40 $262,900 2012 3.60 $299,200 2013 4.00 $321,200 2014 4.10 $373,500 2015 3.80 $358,100 2016 3.60 $382,500 2017 4.00 $402,900…
A poll uses responses everal questions to calculate a "Happiness" index that measures overall happiness. An article included the happiness index for the 7 years between 2008 and 2016. Also included in the article were the percentages of people who responded "somewhat agree" or "strongly agree" to the following statements. Statement 1 (happy with life) 1: At this time, I'm generally happy with my life. Statement Year 2008 2009 2010 2011 2013 2015 2016 2 (won't benefit): I won't get much benefit from the things that I do anytime soon. Happiness Index 36 36 34 32 36 33 30 Happy with Life Statement (percentage somewhat or strongly agree) 82 83 78 79 83 80 82 Won't Benefit Statement (percentage somewhat or strongly agree) 31 37 35 39 39 37 42 (a) Calculate the value of the correlation coefficient for Happiness index and the response to the Happy with life statement. (Round your answer to four decimal places.) 0.8321 x (b) Calculate the value of the correlation coefficient for Happiness…
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The data in the accompanying stem-and-leaf plot summarizes the total deposits (in hundreds of millions of dollars) for savings institutions in a particular state. Answer parts (a) through (c) below. Stem Leaves Stem Leaves Stem Leaves 122444 2 5788 5678899 3 12 5 1123444 4 1 777 4. 78 Units: 615 = $65 hundred million ($6.5 billion) ..... Right Skewed Normal Uniform Left Skewed (b) How many savings institutions had total deposits in the 30 hundred millions? There were 2 savings institution(s) that had total deposits in the 30 hundred millions. (c) How many savings institutions had deposits above $40 hundred million? There were 3 savings institution(s) that had total deposits above $40 hundred million. 3.
The Bank of Canada is interested in studying the relationship between mortgage rates and median home prices. The data is provided below interest rate (%) 10.30 Year Median home price S183,800 $183,200 1988 1989 10.30 1990 10.10 $174,900 1991 9.30 S173,500 $172,900 $173,200 1992 8.40 1993 7.30 1994 8.40 $173,200 S169,700 S174,500 1995 7.90 1996 7.60 1997 7.60 $177,900 $188,100 S203,200 $230,200 $258,200 S309,800 1998 6.90 1999 7.40 2000 8.10 2001 7.00 2002 6.50 2003 5.80 $329,800 2004 5.80 $431,000 2005 2006 2007 $515,000 $537,000 $496,000 5.80 6.40 6.30 2008 6.00 $352,000 $232,000 $291,700 $262,900 2009 5.00 2010 4.70 2011 4.40 2012 2013 3.60 $299,200 4.00 $321,200 $373,500 $358,100 $382,500 $402,900 2014 4.10 2015 3.80 2016 3.60 2017 4.00 a) Estimate a simple linear regression model and find the value of the parameters for the estimation of mortgage rates and the median home price. b) Interpret the intercept and the slope coefficients c) State the correlation coefficient and the…