7) In the claims department of an insurance office various quantities are computed at the end of each day's business. On Monday, 20 claims are received for a particular class of policy. The mean claim amount is calculated to be K4,500 and the standard deviation to be K2,540. On Tuesday, the claims are reviewed and one claim which was incorrectly recorded as K13,000 is now corrected to K3,000. Determine the mean and standard deviation of the corrected set of claims.

Q: A student has taken a 50-point exam and wants to know how his score of 38 compares to the scores of…

A: It is given that Mean = 40 Standard deviation SD = 4 Score X = 38

Q: The mean annual income of workers who are college graduates greater than 120,000.00 a year

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Q: Illustration 10.7. Compute the standard deviation by the short method for the following data: 11,…

A: Data given  11,12,13,14,15,16,17,18,19,20,21

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A: Given Mean =66 Standard deviation=5

Q: In a population with mean 50 what standard deviation score would have a score of X=45

A:

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A:

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A:

Q: If a set of numbers has a standard deviation of zero, what can you say about the numbers?

A: The standard deviation indicates that amount of deviation of data points from the mean.

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A: From the provided information, A score of X = 88 corresponds to z = 2 A score of X = 79 corresponds…

Q: What is the Differences Between Predicted and Observed Values

A:

Q: Write down the formulas for the standard deviation of x.

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Q: Illustration 10.4. Compute the standard deviation for following data: 11. 12. 13. 14, 15, 16, 17,…

A:

Q: The blue, red, and yellow curves all have a mean of 0, while the green curve has a mean of -2. pra…

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Q: Round each z-score to the nearest hundredth. A data set has a mean of  x = 4079  and a standard…

A:

Q: acher wishes to give A’s to the top 8% of the students and F’s to the bottom 8%. The next 10% will…

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Q: find standard deviation if range is 3.

A: Given: Range = 3

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Q: Find the area of the shaded region. The graph to the right depicts scores of adults, and those…

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Q: (a) between 56 and 74. % (b) above 68. % (c) below 56. %

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A:

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Q: How does a nonzero constant number c change a standard deviation problem?

A: Standard deviation is independent of change of origin but it affects by the change of scale.