Homework 6 -...

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Unformatted text preview: -4-3-2-11234Heart_Rate20406080100120140160180Normal Quantile = 0.0495Heart_Rate - 5.4HeartRateNormal Quantile PlotXBar6080100120140160Measures from Sample of HeartRateDot PlotMark Biagi4/1/10Topics 14-15Activity 14-5A. It looks approximately normal although it is a little skewed to the right.B. The plot shows that the data is roughly normally distributed, although there is a bit more data on the right tail than the left tail.C. The graph shows a normal distribution with mean to be around 110 a standard deviation of about 10.D. The distribution appears to about normal even though it had a smaller sample size. This is due to the fact that the population was close to being normally distributed.E. With the larger sample size being used the distribution appears to be more normal shaped (the previous was slightly skewed right). The mean appears to be the same but now the standard deviation is smaller and thus resulting in a smaller spread.Activity 14-7A. A sample mean of 857 dollars or more would be more likely if the standard deviation was $1250 because more variation in the values, the more likely to have values far from the mean of the population. This means that we are more likely to get a sample mean away from the mean of the population....
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Homework 6 -...

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