Mathematics, 26.06.2020 18:01, colton1788
A recent survey conducted by the Country Financial Security Index asked adults 18 and older if they felt that next year will be financially better for them. Thirty percent of the respondents answered "Yes". To verify these findings, a random sample of 250 adults was asked the same question. A total of 55 adults from this sample responded "Yes". Which of the following statements is correct?
(A) The interval that contains 95% of the sample proportions is 0.205 and 0.395. Because the sample proportion is not between these two values, we do not have support for the results of the Country Financial Security Index survey.
(B) The interval that contains 95% of the sample proportions is 0.243 and 0.357. Because the sample proportion is not between these two values, we do not have support for the results of the Country Financial Security Index survey.
(C) The interval that contains 95% of the sample proportions is 0.205 and 0.395. Because the sample proportion is between these two values, we have support for the results of the Country Financial Security Index survey.
(D) The interval that contains 95% of the sample proportions is 0.243 and 0.357. Because the sample proportion is between these two values, we have support for the results of the Country Financial Security Index survey.
Answers: 2
Mathematics, 22.06.2019 00:30, sanfordl
1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?
Answers: 2
Mathematics, 22.06.2019 01:20, allenlitterell
32a³b² 8ab² simplify the following expression.
Answers: 1
Mathematics, 22.06.2019 01:20, corbeansbrain
Can you me with this question? i'll reward *30 points i just need with this one question so that i could solve the others. * edit: i originally set up the question to reward 30 points, but for some reason i can only reward 15. if you don't get 30, then i'm sorry. i'm still kind of new to this site
Answers: 1
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