For each of the following studies, identify both the parameter and the statistic using the appropriate...

For each of the following studies, identify both the parameter and the statistic
using the appropriate notation.

a. A sociologist wants to know the proportion of adults with children under the age of 18 that
eat dinner together 7 nights a week. A simple random sample of 1122 adults with children under the
age of 18 was obtained, and 337 of those adults reported eating dinner together with their families
7 nights a week.

b. A school administrator wants to estimate the mean score on the verbal
portion of the SAT for students whose first language is not English. From a simple random sample of
20 students whose first language is not English, the administrator obtains a sample mean SAT verbal
score of 458.

c. Nexium is a drug that can be used to reduce the acid produced by the
body and heal damage to the esophagus. A researcher wants to estimate the proportion of patients
taking Nexium that are healed within 8 weeks. A random sample of 224 patients suffering from acid
reflux disease is obtained, and 213 of those patients were healed after 8 weeks.

d. A nutritionist wants to estimate the mean amount of sodium consumed
by children under the age of 10. From a random sample of 75 children under the age of 10, the
nutritionist obtains a sample mean of 2993
milligrams of sodium consumed.

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Expert Solution

orchestra answered 1 year ago

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