1. Determine whether the given source has the potential to create a bias in a statistical study:
Chocolate, an article in journal of nutrition (volume 130, no.8) notes that chocolate is rich in flavones. The article notes that: regular consumption of foods rich in flavones may reduce the risk of coronary heart disease" the study received funding from mars, Inc. The candy company and the chocolate manufacturers association
Sampling method Determine whiter the sampling method appears to be sound or is it flawed?
2. Evolution in a survey of beliefs about evolution Gallup pollsters randomly selected and telephoned 1018 adults in the United States.
3. Percentages answer the given questions which are related to percentages
Online shopping, in a consumer reports research center telephone survey of 427 women, 38 % said that they purchased clothing online.
What is the exact value that is 38% of 427?
Could the result from part (a) be the actual number of women who said that they purchase clothing online? Why or why not?
What is the actual number of women who said that they purchase clothing online?
Among the 427 respondents, 30 said that they purchase electronics online. What percentage of women said that they purchase electronics online?
4.
A researcher wants to study food choices of children aged 4-6. She chooses 40 children and asks each of them to taste 2 kinds of graham crackers. They are asked which one they like better.
What is the population of the study?
What is the sample?