9. An automobile insurer has found that repair claims are Normally distributed with a mean of $530 and a standard deviation of $480. (a) Find the probability that a single claim, chosen at random, will be less than $490. (b) Now suppose that the next 60 claims can be regarded as a random sample from the long-run claims process. Find the probability that the average X¯ of the 60 claims is smaller than $490. (c) If a sample larger than 60 claims is considered, there would be __________ chance of getting a sample with an average smaller then $490. (NOTE: Write ''LESS'', ''MORE'' or ''AN EQUAL''.)

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A:

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A:

Q: Suppose that the distribution of the scores of students in Statistics Assignment 1 is roughly…

A:

Q: 2. Suppose the current annual salary of all teachers in the United States have a normal distribution…

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A:

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Q: 9. For a standardized psychology examination intended for a psychology majors, the historical data…

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A:

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A:

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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.