For many years, businesses have struggled with the rising cost of health care. But recently, the increases have slowed due to less inflation in health care prices and employeespaying for a larger portion of health care benefits. A recent survey showed that 58% of employers are likely to require higher employee contributions for health care coveragethis year relative to last year. Suppose the survey was based on a sample of 900 companies likely to require higher employee contributions for health care coverage this yearrelative to last year.At 95% confidence, compute the margin of error for the proportion of companies likely to require higher employee contributions for health care coverage. (Round your answerto four decimal places.)Compute a 95% confidence interval for the proportion of companies likely to require higher employee contributions for health care coverage. (Round your answers to fourdecimal places.)to

sample size (n) = 900p^ = 0.5895% ci p.

Answered: For many years, businesses have…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day. A sample of 71 stocks traded on the NYSE that day showed that 24 went up. You are conducting a study to see if the proportion of stocks that went up is is significantly more than 0.3. You use a significance level of a = 0.01. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... less than (or equal to) a greater than a This test statistic leads to a decision to... reject the null accept the null fail to…
Preferred Investment Instrument Survey A survey of a random sample of 450 workers asked them to identify their preferred investment instrument for retirement saving products. a. Company pension fund b. Retirement annuity С. Unit trust linked funds d. Properties е. National lottery The survey found that 58% selected a company pension fund, 22% chose the retirement annuity, 10% chose unit trust linked funds, while 8% believed properties were the best option and the remainder selected the national lottery as the way to save for retirement. The aim of the study is to describe the opinions of all workers' views in South Africa. The survey also collected the saving values of the 450 workers and complied the following numeric frequency distribution table: Saving Values Frequency R 500 to less than R1 000 120 R1 000 to less than R1 500 98 R1 500 to less than R 2 000 180 R2 000 to less than R2 500 32 R2 500 to less than R3 000 20 Source: Lai, K. (2020)
Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day.A sample of 64 stocks traded on the NYSE that day showed that 24 went up.You are conducting a study to see if the proportion of stocks that went up is significantly more than 0.3. You use a significance level of α=0.01α=0.01.What is the test statistic for this sample? (Report answer accurate to three decimal places.)test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.)p-value = The p-value is... less than (or equal to) αα greater than αα This test statistic leads to a decision to... reject the null accept the null fail to…
Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day. A sample of 72 stocks traded on the NYSE that day showed that 12 went up. You are conducting a study to see if the proportion of stocks that went up is significantly less than 0.3. You use a significance level of a = 0.005. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... O less than (or equal to) a O greater than a This test statistic leads to a decision to... O reject the null O accept the null O…
If a fictional treatment costs a total of $45,000 at today’s value and increases a person’s quality of life from 0.5 to 0.6 for the remainder of the person’s life from age 70 onward, and the person’s expected life span increases from 73 to 75, what is the total gain in QALYs (Quality-adjusted Life Years), and what is the ICER (Incremental Cost-effectiveness Ratio)?
Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day.A sample of 80 stocks traded on the NYSE that day showed that 11 went up.You are conducting a study to see if the proportion of stocks that went up is is significantly less than 0.3. You use a significance level of α=0.02α=0.02.What is the test statistic for this sample? (Report answer accurate to three decimal places.)test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.)p-value = The p-value is... less than (or equal to) αα greater than αα This test statistic leads to a decision to... reject the null accept the null fail…
3. What would be the yearly premium for a $50,000 insurance policy against accidental household flood if the likelihood of an accidental household flood is estimated to be 0.005 and the company wishes to have a yearly expected gain of $2000? a. $2, 250. b. $2,550. c. $2,500. d. $2,520. 4. A manufacturer of electronic equipment buys spare parts for replacement and repairs in lots of one-thousand from the supplier. The manufacturer uses these spare parts to fix items under warrantee. Past historical records show that the probability of any one spare part being defective is unlikely and assumed to be one in one-thousand. In a shipment of one-thousand spare parts the probability of two defectives is a. 0.148. b. 0.184. c. 0.366. d. 0.386. 5. What is the probability of getting exactly three heads in five flips of a balance coin? a. 5/16 b. 3/16 c. 7/16 d. 9/16
Use the most accurate method to forecast the revenues of licenses, permits, and fees in Years 9, 10, and 11. Use the Year 8 actual figure instead of the forecast figure (Year 8 was $23,210,218). Also, consider three incremental changes in forecasting.
Compute the NPV statistic for Project Y if the appropriate cost of capital is 12 percent. (Negative amount should be indicated by a minus sign. Do not round intermediate calculations and round your final answer to 2 decimal places.) Project Y Time: 1 2 3 4 Cash flow: -$8,000 $3,350 $4,180 $1,520 $300
According to a high-profile realtor, houses in the sleepy town of Sun Beach have shown higher appreciation over the past three years than have houses in the bustling town of North Arden. To test the realtor's claim, an economist has found twelve recently sold homes in Sun Beach and twelve recently sold homes in North Arden that were owned for exactly three years. The following table gives the appreciation (expressed as a percentage increase) for each of the twenty- four houses. Appreciation rates in percent Sun Beach 12.5, 12.2, 10.4, 12.9, 6.5, 15.0, 10.1, 10.6, 12.1, 10.8, 10.4, 9.1 North Arden 9.2, 10.7, 9.7, 7.8, 9.7, 12.1, 9.4, 6.1, 7.8, 9.3, 4.6, 11.0 Send data to calculator v Assume that the two populations of appreciation rates are normally distributed and that the population variances are equal. Can we conclude, at the 0.05 level of significance, that houses in Sun Beach have higher appreciation over the past three years than houses in North Arden? Perform a one-tailed test.…
Example 14: The net profit (after taxes) of a firm is 75,000 and its preference dividend is 710,000. Calculara dividend coverage ratio.
Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day. A sample of 72 stocks traded on the NYSE that day showed that 24 went up. You are conducting a study to see if the proportion of stocks that went up is significantly more than 0.3. You use a significance level of a = 0.10. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... less than (or equal to) a greater than a This test statistic leads to a decision to... O reject the null accept the null O fail to…

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