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1. Calculate for the following given the values below. Express your answer in 2 decimal places (example: 25.00) Mean = 88 Standard deviation = 20

1. Calculate for the following given the values below. Express your answer in 2 decimal places (example: 25.00)

Mean = 88

Standard deviation = 20

Sample Size = 150

Confidence Level = 95% What is the margin of error?

2. Consider the given probability distribution. What is the variance of the probability distribution? Express your answer into 2 decimal places (example: 25.00)

\f320 450 290 250 406 367 252 399 390 319 300 300 309 430 200 345 345 205

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