The International Nanny Association (INA) reports that in a sample of 928 in- home child care providers (nannies), 128 have passed the INA Nanny Credential Exam (2014 International Nanny Association Salary and Benefits Survey). A. Use Wilson’s adjustment to find a 95% confidence interval for the true proportion of all nannies who have passed the INA certification exam. B. We want to decide whether the proportion of who passed the INA certification exam exceeds than .12   answer both a and b.

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A: The p-value of the test is 0.103. The decision is fail to reject H0.

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A:

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A:

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A: The confidence interval can be found by using the formula p±zp(1-p)n

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A: Given information For country A p-hat = 0.35 n = 1003

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A: I will use excel to solve this question. Download link for excel:…

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Q: A certain department store is interested in estimating the average amount its credit card customers…

A: According to our guidelines we can answer only first question and rest can be reposted.

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A:

Q: The figure to the right shows the results of a survey in which 1013 adults from Country A, 1001…

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Q: The figure to the right shows the results of a survey in which 1014 adults from Country A, 1012…

A: Hello there! There are more than three subparts in the question. According to our policies can…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.