This hypothesis is considered the status quo.Single choice
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Question at position 10 What is a null hypothesis (H0)?A hypothesis that there is an effect or relationshipA hypothesis predicting a positive outcomeA hypothesis that supports the researcher's beliefA hypothesis stating there is no effect or relationship between variables
These data come from a case-controlled study to examine the potential relationship between age at first pregnancy and cervical cancer. In a case-control study a random sample of cases (i.e. people with the disease in question) and controls (i.e. people similar to those in the case group, except they do not have the disease) and the proportion of people with some potential risk factor are compared across the two groups. In this study we will be comparing the proportion of women who had their first pregnancy at or before the ages of 25, because researchers suspected that an early age at first pregnancy leads to increased risk of developing cervical cancer. The data is presented in the table below: Age at First Pregnancy <=25 Age at First Pregnancy>25 Cervical Cancer 42 7 Control 203 114 What is the appropriate null hypothesis to determine if there is an association between age at first pregnancy and later development of cervical cancer?
The null hypothesis states that there will be no differences between two groups
Question 16All of the following are true of a null hypothesis EXCEPT:
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