Identify the sample and the population in this statement: A research methods class has 25 students enrolled, but only 23 students attended class.
What will be an ideal response?
The statistics class has a population of 25 students enrolled, but a sample of only 23 students attended.
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While driving her children, Adriana's car broke down
She called her husband on the cell phone for the number of a towing company. If the children's behavior prevents her from repeating the number to herself, most likely Adriana will need to dial the phone number within the next _____ or she will forget the number. A) 2 seconds B) 15 seconds C) 45 seconds D) 60 seconds
All of the following treatments show promise in treating posttraumatic stress disorder EXCEPT ______.
A. a technique involving virtual reality B. fear erasure C. psychotherapy D. exposure therapy
In a 2 × 2 factorial design, for a completely independent groups design with 20 participants per group, how many participants are needed?
A. 80 B. 40 C. 60 D. 20
A sample of n = 4 scores is selected from a population with µ = 30 and s = 8. The probability of obtaining a sample mean greater than 34 is equal to the probability of obtaining a z-score greater than z = 2.00 from a normal distribution
Indicate whether the statement is true or false