QUESTION 1 0.25 points Save Answer A random sample of 100 students is taken at L

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QUESTION 1 0.25 points Save Answer A random sample of 100 students is taken at LearnAll University and it's found that their average GPA is 3.1. If this information is used to help estimate the average GPA for all students at LearnAll University which branch of statistics was applied? Oa Inferential statistics O b. Population statistics Oc. Descriptive statistics Od Sample statistics QUESTION 2 0.25 points Save Answer A descriptive measure that is computed from a sample is called a: Ob.sample. Oe population Od. statistc QUESTION 3 0.25 points Save Answer Which of the following is a measure of the reliability of a statistical inference? Oa A descriptive statistic. b. A sample statistic Oc. A significance level QUESTION 4 0.25 points Save Answer The process of using sample statistics to draw conclusions about population parameters is called: Oa doing inferential statistics Ob.finding the significance level c. descriptive statistics. d.calculating the confidence level QUESTION 5 0.25 points Save Answer A researcher at Florida International University (FIU) wants to estimate the average number of credits earned by students last semester at FIU. She randomly selects 750 students from last semester and finds that they averaged 13.75 credits per student. The population of interest to the researcher is: a all FIU students ervoled last semester. Ob. al FIU students c. the 750 FIU students selected at random. Od.all college students.

Explanation / Answer

question 1: here on the basis of the random sample of size 100 on hand, the aim is to estimate a population parameter which is unknown.

now the procedure of estimating the population parameter on the basis of sample at hand is known as inference

hence inferencial statistics was used [option A]

question 2:a descriptive measure that is computed from a sample is called a Statistic [option D]

question 3: for any testing procedure we need to fix a significance level which gives that with how much confidence or surity the confidence interval will contain the true value of the parameter.

hence significance level gives a measure of confidence or reliability which denotes how reliable the outcome of the testing procedure is

hence the answer is significance level [option C]

question 4: the process of using sample statistics to draw conclusions about population parameter is called : doing inferential statistics [option A]

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