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The article "Consumers Show Increased Liking for Diesel Autos" (USA Today, January 29, 2003) reported that 27% of U.S. consumers would opt for a diesel car if it ran as cleanly and performed as well as a car with a gas engine. Suppose that you suspect that the proportion might be different in your area and that you want to conduct a survey to estimate this proportion for the adult residents of your city.
a. What is the required sample size if you want to estimate this proportion to within .05 with 95% confidence? Compute the required sample size first using .27 as a preliminary estimate of p and then using the conservative value of .5.
b. How do the two sample sizes compare? What sample size would you recommend for this study?
What do we mean by future value of an investment and why is this important to you and your financial planning for the future?
The data owner pre-processes the data items by adding dummy keywords so that each keyword matches the same number of data items
Which listening type focuses on learning about the knowledge level and emotional state of the user
If the mean number of faulty cell phones is 2 per day, what is the probability that 3 or more faulty cell phones were produced in today's run?
How could a business use information technology to increase switching costs and lock in its customers and suppliers? Use business examples to support your answers
What's the average order price per order?(HINT: Look at the extended price for each order and then use the Excel AVERAGE function to get the average order price)
Can we assume that an increase in credit card debt (which is an indication of an increase in consumption) is a path to restoring our economy to full employment?
Like C, C++ provides a facility for defining a structure type composed of multiple named components.
Assume that the dictionary itself can be stored by using, for each word, length(word) + 1 bytes.
Write down all the reasons why you would or would not use Internet storage. List at least one advantage and one disadvantage of using Internet storage.
Draw two triangles where A = 30°, a = 6, and b = 10. Calculate and label the degree measure of each angle rounded to the nearest tenth.
Suppose the resistor in Problem 7.33 is rotated so that its axis is aligned with the flow. What is the maximum permissible power dissipation?
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