Chapter 1: Q3CQQ (page 1)
In the same study cited in Exercise 1, birth weights of newborn babies are given in grams. Are these birth weights discrete data or continuous data?
Short Answer
Continuous data
Chapter 1: Q3CQQ (page 1)
In the same study cited in Exercise 1, birth weights of newborn babies are given in grams. Are these birth weights discrete data or continuous data?
Continuous data
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Criminal ForensicsWhen studying the relationship between lengths of feet and heights so that footprint evidence at a crime scene can be used to estimate the height of the suspect, a researcher records the exact lengths of feet from a large sample of random subjects.
In Exercises 21–24, refer to the data in the table below. The entries are white blood cell counts (1000 cells,ML) and red blood cell counts (million cells,ML) from male subjects examined as part of a large health study conducted by the National Center for Health Statistics. The data are matched, so that the first subject has a white blood cell count of 8.7 and a red blood cell count of 4.91, and so on.
Given the context of the data in the table, what issue can be addressed by conducting a statistical analysis of the measurements?
Parameter and Statistic In a Harris Interactive survey of 2276 adults in the United States, it was found that 33% of those surveyed never travel using commercial airlines. Identify the population and sample. Is the value of 33% a statistic or a parameter?
Falsifying Data A researcher at the Sloan-Kettering Cancer Research Center was once criticized for falsifying data. Among his data were figures obtained from 6 groups of mice, with 20 individual mice in each group. The following values were given for the percentage of successes in each group: 53%, 58%, 63%, 46%, 48%, 67%. What’s wrong with those values?
Identify whether the given value is a statistic or a parameter.
Birth Weight In a study of 400 babies born at four different hospitals in New York State, it was found that the average (mean) weight at birth was 3152.0 grams.
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