# Question: Data on investments in the high tech industry by venture capitalists

Data on investments in the high-tech industry by venture capitalists are compiled by Venture One Corporation and published in America's Network Telecom Investor Supplement. A random sample of 18 venture capital investments in the fiber optics business sector yielded the following data, in millions of dollars.

a. Determine a 95% confidence interval for the mean amount, μ, of all venture-capital investments in the fiber optics business sector. Assume that the population standard deviation is $2.04 million. (Note: The sum of the data is $113.97 million.)

b. Interpret your answer from part (a).

a. Determine a 95% confidence interval for the mean amount, μ, of all venture-capital investments in the fiber optics business sector. Assume that the population standard deviation is $2.04 million. (Note: The sum of the data is $113.97 million.)

b. Interpret your answer from part (a).

**View Solution:**## Answer to relevant Questions

Calcium is the most abundant mineral in the human body and has several important functions. Most body calcium is stored in the bones and teeth, where it functions to support their structure. Recommendations for calcium are ...Refer to Exercise 8.31. a. Find a 99% confidence interval for μ. b. Why is the confidence interval you found in part (a) longer than the one in Exercise 8.31? c. Draw a graph similar to that shown in Fig. 8.5 on page 315 to ...The U.S. Census Bureau compiles data on family size and presents its findings in Current Population Reports. Suppose that 500 U.S. families are randomly selected to estimate the mean size, μ, of all U.S. families. Further ...A confidence interval for a population mean has length 20. a. Determine the margin of error. b. If the sample mean is 60, obtain the confidence interval. c. Construct a graph similar to Fig. 8.6 on page 320. In Exercise 8.35, you found a 95% confidence interval of 18.8 months to 48.0 months for the mean duration of imprisonment, μ, of all East German political prisoners with chronic PTSD. a. Determine the margin of error, E. b. ...Post your question