Let X denote the number of flaws along a 100-m reel ofmagnetic tape (an integer-valued variable). Suppose Xhas approximately a normal distribution with m 5 25and s 5 5. Use the continuity correction to calculate theprobability that the number of flaws isa. Between 20 and 30, inclusive.b. At most 30. Less than 30.

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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.