In a study of the tooth-brushing habits of a large number of dental patients, it was observed that time spent brushing teeth each day was Normally distributed, with a mean of 230 seconds and a standard deviation of 20 seconds. A patient who spends 196 seconds brushing their teeth each day is at the percentile in this distribution. 8.08 4.46 27.42 42.07 11.51

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A5)
In a study of the tooth-brushing habits of a large number of dental patients, it was observed that time spent
brushing teeth each day was Normally distributed, with a mean of 230 seconds and a standard deviation of
20 seconds. A patient who spends 196 seconds brushing their teeth each day is at the
percentile in this distribution.
8.08
4.46
27.42
42.07
11.51
Transcribed Image Text:In a study of the tooth-brushing habits of a large number of dental patients, it was observed that time spent brushing teeth each day was Normally distributed, with a mean of 230 seconds and a standard deviation of 20 seconds. A patient who spends 196 seconds brushing their teeth each day is at the percentile in this distribution. 8.08 4.46 27.42 42.07 11.51
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