Indicate which of the following are correct, and correct the ones that are not. (a) 52.52 = 5 (b) (/8)4/3 = 82/3 %3D (c) 38 = 32 34 (d) (24)-2 = 2² %3D
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- What is the total effect on the economy of a government tax rebate of $500 to each household in order to stimulate the economy if each household will spend of the rebate in goods and services?What percentage of scores is between a z of ‐2 and a z of +2? Why is this important?We have the following data of yields of regular treasury bonds
- Suppose you wanted to poll citizens of the U.S. and Canada to estimate the number of people who caught COVID19 in 2021. You do this by first estimating the percentage of population with COVID19 and then multiplying that estimate by the population of each country. The U.S. has a population of about 328 million, while Canada has a population of about 38 million. Other things being equal, how many people would you need to poll in each country so that your level of accuracy in number of people with COVID19 was comparable between the two countries? a. You should poll the same number of people in the U.S. and Canada. b. You should poll more people in the U.S. c. More information is needed. d. You should poll more people in Canada.Suppose you wanted to poll citizens of the U.S. and Canada to estimate the number of people who caught COVID19 in 2021. You do this by first estimating the percentage of population with COVID19 and then multiplying that estimate by the population of each country. The U.S. has a population of about 328 million, while Canada has a population of about 38 million. Other things being equal, how many people would you need to poll in each country so that your level of accuracy in number of people with COVID19 was comparable between the two countries? Group of answer choices You should poll more people in Canada. You should poll the same number of people in the U.S. and Canada. You should poll more people in the U.S. More information is needed.An editorial in the New York Times on Sunday June 4, 2011 dicussed the redesigned fuel economy stickers to be required on new cars starting in 2013. Consider a new idsize fuord fusion s model. At $4-a-gallon gas, annual fuel costs would be about $2,200 for 15,000 miles driven... And thats for a car with a rated mileage of 34.9m.p.g. actual highway mileage, as with all vehicles, is lower, in this case about 27m.p.g. Industry clearly needs to do better. Did the times use the rated or the actual mileage in its computation?
- Consider the following: In general, when people diet they typically lose 10 lbs. (?σ = 2). A random sample of 16 people on the keto diet lost 15 lbs. Do people on the keto diet lose more or less weight than people on diets in general? -Weight loss in the keto diet sample does differ from weight loss in the population of dieters in general (H1: X-bar does not equal Mu) -On average, weight loss in the keto diet sample does not differ from weight loss in the population of dieters in general. (H0: X-bar = Mu)) Question: 1. What is μxbar? 2.What is σxbar?Consider the following: In general, when people diet they typically lose 10 lbs. (?σ = 2). A random sample of 16 people on the keto diet lost 15 lbs. Do people on the keto diet lose more or less weight than people on diets in general? -Weight loss in the keto diet sample does differ from weight loss in the population of dieters in general (H1: X-bar does not equal Mu) -On average, weight loss in the keto diet sample does not differ from weight loss in the population of dieters in general. (H0: X-bar = Mu)) Question: 1. What is ?????? 2.What is ??????A survey found that in a sample of 100 families, 37 owned cats. A survey done 5 years ago found that in a sample of 80 families, 34 owned cats. At ? = 0.05 has the proportion of cat owners changed over the 5-year period?
- The following is a scatterplot for a company's actual annual sales (in millions of dollars) for 11 consecutive years, from 2010 to 2020. For the year 2015, what value almost reached the sales? What is the correct ? a) 2020b) 2010c) 2011d) 2012e) 10f) 15g) 20For the situation described below, state the null and alternative hypotheses to be tested. (Enter != for ≠ as needed.) A seed wash is expected to change the proportion p of seeds that germinate when planted in poorly-draining soil. Suppose that the current germination rate is about 70%.The mean ±1 sd of ln [calcium intake (mg)] among 25females, 12 to 14 years of age, below the poverty level is6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake(mg)] among 40 females, 12 to 14 years of age, above thepoverty level is 6.80 ± 0.76 4-What is the p-value corresponding to your answer toProblem 8.4?
