Normal temperatures, part II Consider again the statis-tics about human body temperature in Exercise 17. a) Would a 90% confidence interval be wider or nar-rower than the 98% confidence interval you calculated before? Explain. (Don’t compute the new interval.)b) What are the advantages and disadvantages of the98% confidence interval?c) If we conduct further research, this time using asample of 500 adults, how would you expect the 98%confidence interval to change? Explain.d) How large a sample might allow you to estimate themean body temperature to within 0.1 degrees with98% confidence?
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.
tics about human body temperature in Exercise 17.
rower than the 98% confidence interval you calculated
b) What are the advantages and disadvantages of the
98% confidence interval?
c) If we conduct further research, this time using a
sample of 500 adults, how would you expect the 98%
confidence interval to change? Explain.
d) How large a sample might allow you to estimate the
mean body temperature to within 0.1 degrees with
98% confidence?
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