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1. The mean diastolic blood pressure for a random sample of 80 people was 100 millimeters of mercury. If the standard deviation of individual blood pressure readings is known to be 9 millimeters of mercury, find a 95% confidence interval for the true mean diastolic blood pressure of all people. Then complete the table below. What is the lower limit of the 95% interval? What is the upper limit of the 95% interval?
2. A union of restaurant and foodservice workers would like to estimate the mean hourly wage, mean , of foodservice workers in the U.S. The union will choose a random sample of wages and then estimate using the mean of the sample. What is the minimum sample size needed in order for the union to be 95% confident that its estimate is within $0.45 of? Suppose that the standard deviation of wages of foodservice workers in the U.S. is about$2.25.
3. Suppose that a random sample of 13 adults has a mean score of 78 on a standardized personality test, with a standard deviation of 6. (A higher score indicates a more personable participant.) If we assume that scores on this test are normally distributed, find a 99% confidence interval for the mean score of all takers of this test. What is the lower limit of the confidence interval? What is the upper limit of the confidence interval?
4. Twenty years ago, a very famous psychologist specializing in marriage counseling authored a book detailing the way in which she believed spouses should communicate. She is now interested in theproportion of all couples who bought her book who stayed together. For a random sample of 200 200couples who bought her book, she found that 164164 of them stayed together. Based on this, compute a 95%95% confidence interval for the proportion of all couples who bought her book who stayed together. What is the lower limit of the 95% confidence interval? What is the upper limit of the 95% confidence interval?
Now the Internet is still rampant among the students, students, even those who are already working, on the Internet there is definitely a negative and positive impact depends on us who wear them, Below which included the negative impact it is ...
Critically analyse the strategic decision made by Whirlpool. Discuss carefully how the company initiated successful decisions and how each strategic level has been considered to compete in the market.
Net income=5,000,depreciation=2,500, increase in deferred tax liabilities=500, decrease in accounts receivables=2,000, increase in inventories=9,000, decrease in accounts payable=5,000, increase in liabilities=1,000, increase in property & equipment=..
Explain the relationship between business and society?
What are the relevant tax issues that Celine faces in making her decision?
Cost/Benefit Analysis: Analyze the return on investment of the project from the point of view of the company and also from the host government.
do not transition from physical stores to online shopping very well. Examine the pros and cons of the two forms of retailing and the possible target markets for each.
Analyze and discuss the organizational restructuring strategies, such as rightsizing, verticalization, networking, delayering, and virtual teams, that one believes would be most beneficial.
Explain What do you think about the use of sweatshop labor and How does your understanding of labor economics influence your opinion?
Write about the international financial manager at Wal-Mart. This is the individual who is in charge of international financial management at Wal-Mart. Also, express the position they hold in the organization.
question related tonbsp effective communicationwhat is the importance of having effective communication in the
Explain two ways to manage risk at a small business.
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