Interpret the interval. We are 99% confident that the proportion of all patients who experience a failure after receiving this type of defibrillator is within this interval. We are confident that the proportion of all patients ages 50 or older who experience a failure within the first two years after receiving this type of defibrillator is within this interval 99% of the time. We are 99% confident that the proportion of all patients ages 50 or older who experience a failure within the first two years after receiving this type of defibrillator is within this inte We are confident that 99% of all patients ages 50 or older who experience a failure within the first two years after receiving this type of defibrillator is within this interval.

MORE BENEFITS OF EATING ORGANIC Using data from a study, we find a significant difference in the proportion of fruit flies surviving after 13 days between those eating organic potatoes and those eating conventional (not organic) potatoes. This exercise asks you to conduct a hypothesis test using additional data from this study. In this case, we are testing where p, and p, represent the proportion of fruit flies alive at the end of the given time frame of those eating organic food and those eating conventional food, respectively. We have n₁ = n₂ = 500. Show all remaining details in the test, using a 5 % significance level. Effect of Organic Raisins After 20 Days After 20 days, 275 of the 500 fruit flies eating organic raisins are still alive, while 170 of the 500 eating conventional raisins are still alive. ¹Proportions approximated from information given in the paper. Part 1 Give the test statistic and the p-value. Round your answers to three decimal places. Ho: Po = Pc Ha: Po > Pe…

Confidence in banks: A poll conducted in  2012  asked a random sample of  1217  adults in the United States how much confidence they had in banks and other financial institutions. A total of  160  adults said that they had a great deal of confidence. An economist claims that greater than  11%  of U.S. adults have a great deal of confidence in banks. Can you conclude that the economist's claim is true? Use both  =α0.05  and  =α0.10  levels of significance and the P-value method with the TI-84 Plus calculator.     (a) State the appropriate null and alternate hypotheses.   :H0     :H1

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We have data on the lean body mass and resting metabolic rate for 12 women who are subjects in a study of dieting. Lean body mass, given in kilograms, is a person's weight leaving out all fat. Metabolic rate, in calories burned per 24 hours, is the rate at which the body consumes energy.   Mass   40.5 37.9 54 50.8 48.9 51.9 52.3 36.7 37.3 44.7 37.6 46.7 Rate   1380 1560 980 1170 1230 1240 1480 1560 1440 1130 1570 1490 Find the least-squares regression line for predicting metabolic rate from body mass.ANSWER:   y^=