1) According to the national center on health statistics (2004), 22.4% of adults are smokers. A...
A Gallup poll found that 493 of 1050 adult Americans believe it is the responsibility of the federal government to make sure all Americans have healthcare coverage. What is the sample in this study? What is the population of interest? What is the variable of interest in this study? Is it qualitative or quantitative? Based on the results of this study, obtain a point estimate for the proportion of adult Americans who believe it is the responsibility of the federal...
4. The National Center for Health Statistics interviewed 5409 adult smokers in 2015, and 2636 of them said they had tried to quit smoking during the past year. Consider this to be a random sample Find a 95% confidence interval for the proportion of smokers who have tried to quit within the past year. Find a 99% confidence interval for the proportion of smokers who have tried to quit within the past year а. b. Someone claims that the proportion...
Question 34 0/2 pts Question 8b 8. According to the National Center for Health Statistics, 13.7% of adults are smokers. A random sample of 300 adults is obtained. b. We want to describe the sampling distribution of the sample proportion of adults who smoke. For this question, what is the standard deviation of this sampling distribution? 0.01985 0.137 0.7614 7.218 41.1
8.9 According to the National Center for Health Statistics, as of 2012, it is estimated that 24% of adults in Missouri smoke. You wish to know the probability of selecting from this popula- tion a random sample of 30 people containing 8 or fewer smokers a. Use a statistical program to determine the exact probability of getting 8 or fewer smok- ers. (Hint: refer to section 5.4.) b. Now use the normal approximation of the binomial distribution to answer the...
13. 4 GB Flash Memory Card After scanni of a 4 GB flash memory card using his smartp emory Card After scannine the UPC code Sullivan received the followineries for the goods at of online retailers Treat the data as simple random of all online retailers. 12.25 13.49 13.76 14.75 14.99 20.49 15.27 1595 17.88 Source: Scan Life his smartphone, Michael owing prices for the goods at a variety lata as a simple random sample 14.99 (a) Determine a point...
Please answer this question/explain entirely thanks! 8.9 According to the National Center for Health Statistics, as of 2012, it is estimated that 24% of adults in Missouri smoke. You wish to know the probability of selecting from this popula- tion a random sample of 30 people containing 8 or fewer smokers. a. Use a statistical program to determine the exact probability of getting 8 or fewer smok- ers. (Hint: refer to section 5.4.) b. Now use the normal approximation of...
3 Construct a 90% confidence interval for the following random sample of Lucas Barrett's golf scores for a particular golf course he played so that he can figure out his true (population) aver 95 92 95 99 92 84 95 94 95 86 (hint: Use T-distribution table. Formula Interval estimate of a population mean when stan age score for the dared deviation is unknown) 4 The auto industry relies heavily on 0% financing to entice customers to purchase cars. In...
The National Center for Health Statistics reports that 25% of all Americans between the ages of 65 and 74 have a chronic heart condition. Suppose you live in a state where the environment is conducive to good health and low stress and you believe the conditions in your state promote healthy hearts. To investigate this theory, you conduct a random telephone survey of 18 persons 65 to 74 years of age in your state. "(Round your answer to 2 decimal...
question 1. A random sample of 1002 adults in a certain large country was asked " do you pretty much think televisions are necessity or a luxury you could do without?" Of the 1002 adults surveyed, 511 indicated that televisions are a luxury they could do without. Complete parts (a) through (e) below question 2. A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate...
A poll of two years ago, conducted by Louis Harris & Associates for Business Week magazine, examined the perception of American adults of their government. When asked whether the U.S. government represents the concerns of the American people or those of special interest groups, 63% of those polled felt that the U.S. government primarily represents the concerns of special interest groups. Assume that this percentage was true for the population of all American adults at the time the poll was...