ECO 251-72 Share ^ References Mailings Review View Trke a Test-Jernelle Rogers S

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ECO 251-72 Share ^ References Mailings Review View Trke a Test-Jernelle Rogers Secure https://www.mathxl.com/Student/PlayerTest.aspx?testld-175638494&centerwin-yes; MAT 152 Online Spring 2018 Quiz: Quiz - Chapter 1 ofd @ This Question: 1 pt 8018(6 complete) Determine whether the underlined value is a parameter or a statistic. The average score for a class of 28 students taking a calculus midterm exam was 72% Is the value a parameter or a statistic? A. The value is a parameter because the class of 28 students is a sample. O B. The value is a statistic because the class of 28 students is a sample O C. The value is a parameter because the class of 28 students is a population. O D. The value is a statistic because the class of 28 students is a population sh- Click to select your answer

Explanation / Answer

1) The value of parameter is based on population and value of statistic is based on sample.

Here we are interested in average score of class of 28 student who are taking calculus mid term exam. In the college all students from all classes who are taking calculus midterm exam is population and students from a perticular class is sample.

Hence the correct option

B. The value is a statistic because the class of 28 students is sample.

Q2 . Here population is all adult women who are contacted by polling organization and sample is number of adult women who received mammogram.

Poulation is study :

A . Adult women who are 30 to 70 years age and live in the united states.

Sample in the study :

Adult women who are 30 to 70 years age who live in the united states and have received mammogram.

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