Answer :
a. A scatterplot is a two-dimensional graph of data values.
b. The probability that the average weight of our 143 subjects is bigger than 193 lb Cannot say from the information provided.
The information provided is not enough to determine the probability that the average weight of the 143 subjects is bigger than 193 lbs. We know that the average weight of adult males in Alachua County is 190 lbs with a standard deviation of 20 lbs. However, we don't know the distribution of the weights of adult males in Alachua County.
If the weights are normally distributed, then we can use the z-score to calculate the probability that the average weight of the 143 subjects is bigger than 193 lbs. However, if the weights are not normally distributed, then we cannot use the z-score to calculate the probability.
In order to determine the probability that the average weight of the 143 subjects is bigger than 193 lbs, we need more information about the distribution of the weights of adult males in Alachua County.
For such more question on probability:
https://brainly.com/question/23417919
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