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The number of people watching a particular daily television newscast is normally distributed with a mean audience of 1.1 million people and a standard deviation of .15 million people. What is the proportion of these newscasts having between .9 million and 1.5 million viewers?
We can determine the following information about the amount remaining in a toothpaste tube without invading anyones privacy. How much toothpaste would you expect to be remaining in the tube?
What is the value of the population mean? What is the best estimate of the value?
What proportion for smoking teenagers think their peers care a lot about keeping their weight down?
Health and Nutrition Examination Survey, suppose that weights of men now are normally distributed with mean of m =172 pounds and standard deviation of s = 29 pounds.
Employer wishes to interview only those applicants who score in top 15%. What must cut-off score be for interviews?
Develop a pie chart to summarize these contributions. Develop a bar chart to summarize these contributions and why is it appropriate to construct a bar chart for these data instead of a histogram?
The following data represents the amount of time in minutes that a person had to wait for a bus to work on a random sample of 5 working days.
A researcher wishes to estimate with 99% confidence, the proportion of adults who have high-speed Internet access. Her estimate must be accurate within 2% of the true proportion.
You wish to do a community needs assessment survey of a community to find out how much office space is needed by professionals in the community.
From the given polynomials, identify the polynomials of degree one. A function gives the value of C as 2 × (22/7) × r. Find C when r = 7 cm and r = 91 cm.
A screening test is used in the same way in two similar populations, but the proportion of false-positive results among those who test positive in population A is lower than that among those who test positive in population B.
If 64 students were randomly sampled, the probability that the sample mean of the sampled students exceeds 73.5 minutes is approximately 0.
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