After a genetics experiment on 58 pea plants, the number of plants having certain characteristics was tallied, with the results given to the right. Answer parts (a) through (c). 19 were tall; 29 had green peas; 40 had smooth peas; 7 were tall and had green peas; 17 had green peas and smooth peas;
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
After a genetics experiment on 58 pea plants, the number of plants having certain characteristics was tallied, with the results given to the right. Answer parts (a) through (c).
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19
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were tall; |
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29
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had green peas;
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40
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had smooth peas;
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7
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were tall and had green peas;
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17
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had green peas and smooth peas;
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4
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had all three characteristics;
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4
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had none of the characteristics.
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a. Find the number of plants that were tall and had smooth peas.
b. How many plants were tall and had peas that were neither smooth nor green?
c. How many plants were not tall but had peas that were smooth and green?
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