NBC News reported on May 2. 2013.that 1in 20 children in the United States have a food allergy of some sort. Consider selecting a random sample of 25 children and let X be the number in the sample who have a food allergy.Then X ~Bin(25, .05). a. Determine both P(X ≤3) and P(X < 3). b. Determine P(_X ≥ 4). c. Determine P(1≤X ≤ 3). d. What are E(X) and σx? e. In a sample of 50 children, what is the probability that none has a food allergy?
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
NBC News reported on May 2. 2013.that 1in 20 children in the United States have a food allergy of some sort. Consider selecting a random sample of 25 children and let X be the number in the sample who have a food allergy.Then X ~Bin(25, .05).
a. Determine both P(X ≤3) and P(X < 3).
b. Determine P(_X ≥ 4).
c. Determine P(1≤X ≤ 3).
d. What are E(X) and σx?
e. In a sample of 50 children, what is the probability that none has a food allergy?
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