Researchers are interested in updating the average survival time of breast cancer patients.

1. Researchers are interested in updating the average survival time of breast cancer patients. Current national data claims a 5.1 year average survival time for breast cancer patients. . After treatment analysis of a new drug for breast cancer, based on 1000 patients, the research team calculates that the average survival time is 7.8 years.
a) Does the national data report contain a parameter or an estimator?
b) Does the study report a parameter or an estimator?
Identify each of the following as either a parameter or a statistic, and give the correct notation.
c) Average body temperature, based on 100 randomly selected people.
d) Proportion of non-smokers based on data from 10000 people.
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