Question

According to a survey of 795 small business participants chosen at random in the Constant Contact Small Biz Council in May of 2013, 480 of the respondents say it is harder to run a small business now than it was 5 years ago. When estimating the population proportion, what is the 95% confidence interval estimating the proportion of businesses who believe it is harder to run a business now than 5 years ago?

Question 7 options:

	1) ( 0.58643 , 0.62112 )
	2) ( 0.57524 , 0.63231 )
	3) ( 0.56977 , 0.63777 )
	4) ( -0.56977 , 0.63777 )
	5) ( 0.36223 , 0.43023 )

Question 8 (1 point)

You are interested in getting an investment portfolio started with any extra money you make from your part time job while also going to school. While flipping through the latest edition of Money magazine, you read an article that of a survey of magazine subscribers, 194 were randomly selected and analyzed. A 99% confidence interval was constructed for the proportion of all subscribers who made money in the previous year in their investments, which was ( 0.7484 , 0.8908 ). What is the correct interpretation of this confidence interval?

Question 8 options:

	1) We are 99% confident that the proportion of all Money magazine subscribers that made money in the previous year from their investments is between 0.7484 and 0.8908.
	2) We cannot determine the proper interpretation of this interval.
	3) We are 99% confident that the proportion of all Money magazine subscribers sampled that made money in the previous year from their investments is between 0.7484 and 0.8908.
	4) We are 99% confident that of the 194 respondents, between 0.7484 and 0.8908 of them made more than they lost.
	5) We are certain that 99% of subscribers made between 0.7484 and 0.8908.

Question 9 (1 point)

Based on past data, the producers of Ice Mountain bottled water knew that the proportion of people who preferred Ice Mountain to tap water was 0.606. To see how consumer perception of their product changed, they decided to conduct a survey. Of the 107 respondents, 79 indicated that they preferred Ice Mountain to the tap water in their homes. The 95% confidence interval for this proportion is ( 0.655 , 0.8216 ). What is the best conclusion of those listed below?

Question 9 options:

	1) The confidence interval does not provide enough information to form a conclusion.
	2) We can claim that the proportion of consumers who prefer Ice Mountain to their tap water is larger than 0.606.
	3) The proportion of consumers who prefer Ice Mountain is 0.606 with 95% confidence.
	4) We can conclude that the proportion of consumers who prefer Ice Mountain to their tap water is smaller than 0.606.
	5) We can not conclude that the proportion of consumers who prefer Ice Mountain to their tap water differs from 0.606.

Answer 1

Que - 7 p= * = 480 = 0.60377 n 795 950% confidence internal P + Zxv* fp(8. B) 10.60377*0. 3962 0.60 377 .t = 1.96* J795 0.60 377 I 0.03400 (0.56971, 0.63777) option (3) is correct Que to HomeworkLib policy, attempt only frost Thank you. I have to question, Cs Scanned with amscanner