A population has a mean of 53 and a standard deviation of 21 . A sample of 49 observations will be taken. The probability that the sample mean will be greater than 57.95 is _____
a. 0
b. .0495
c. .4505
d. None of the answers is correct.
b
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Indicate whether the statement is true or false
Universal Services Inc provides communication services to residential and business customers in rural and small urban communities primarily in northern England
The company offers services such as local and long distance voice, data, and Internet and broadband product offerings. The company, in an attempt to increase the attractiveness of its offerings, decides to provide special voice and data packages to its customers. The company designs eight different packs that offer varying voice and data benefits to customers. The company then asks a few of its customers to rank the packs in order to choose two best packs. Which of the following testing methods is being used in this scenario? A) virtual reality testing B) conjoint analysis C) perceptual mapping D) product fabrication E) rapid prototyping
Using the word "the" instead of "a" can make a difference in the way respondents answer a question
Indicate whether the statement is true or false
Which of the following is a capital budgeting method used to screen potential investments?
A) return on assets B) acid test ratio C) accounting rate of return D) debt-to-equity ratio