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People living in Urban and Rural areas were asked where they get their garden care products. Garden Shop Discount Store Supermarket TOTAL URBAN 1 1
People living in Urban and Rural areas were asked where they get their garden care products. Garden Shop Discount Store Supermarket TOTAL URBAN 1 1 20 1 5 46 RURAL 12 26 24 62 Total 23 46 39 1 08 Suppose a test for independence is conducted to help determine if were a person lives (Urban or Rural} affects where they shop for garden care products. Use the following Desmos app to help with this question. https:flwwwdesmos.comx'calculatorfif2whxivio A} Does the null hypothesis state that where a person lives is "independent" or "dep endent" of where they shop for garden care products? B} When variables are dependent, are the observed values going to be relativelythe "same" or "different" than the expected values? C} If where a person lives is independent of where they shop for garden care products, how many people that live in urban areas would you expect to shop at supermarket? (round to nearest tenth] D) What is the pvalue for test for independence? [Round to nearest tenth} E] Is there enough evidence from this test to conclude that there is a relationship between where a person lives and where they shop for garden care products? "yes" or "no" Choose... : chase... different 'I 5 dependent 19.5 0.8 0.5 16.6 no 0.? 0.9 independent yes 0.6 same I Based on historical and recent data, the United Nations predicts the population of Sweden to grow linearly for years to come. Years since 2010 Population in Millions *= 0 9.4 * = 4 9.7 x = 10 10.1 Use the following demos app to help with this question. https://www.desmos.com/calculator/84awrx6hxa A) The equation of the regression line has form y = a + br. What is a? 1.5 !) The equation of the regression line has formy = a + be. What is b? Chooon.. 2085 2045 () What is the value of the correlation associated with the regression line? 11 D) What would the linear model extrapolate the population of Sweden to 1 be in 2080? (In Millions) E) In what year will the population of Sweden reach 12 million if it continues 9.4 to grow linearly? 1.5 102 2087
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