A data set has a mean of 70 and a standard deviation of 10. Which of the followi
ID: 3297293 • Letter: A
Question
A data set has a mean of 70 and a standard deviation of 10. Which of the following might possibly be true? No less than 30% of the data values are less than 50 or greater than 90. At least 15% of the data values are less than 40 or greater then 100. No more than 50% of the data values are between 50 and 90. More than 90% of the data values are between 40 and 100. Ownership of a computer is an example of a categorical variable or a numerical variable? A bank took a random sample on processing time in days for loan approvals: 73, 19, 16, 64, 28, 31, 90, 60, 56 and 28. What is the first quartile, Q1? 28.5 64 16 28 A bank took a random sample on processing time in days for loan approvals 73, 19, 16, 64, 28, 31, 90, 60, 56 and 28. What is the Standard Deviation of this sample? 25 25.35 26.3 24.9 A point estimate is more likely to occur than an interval estimate? True FalseExplanation / Answer
Answer :
1) here for question first answer is fourth that is, more than 90% of data values are between 40 and 100
2) Ownership of computer is example of catagorial variable.
3) First Quartile for above values is 28.0
4) Standerd Deviation of above values is 25.35
5) A point estimate is more likely to occur than an interval estimate is FALSE.