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rahulcena rahulcena
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7 years ago
Business decisions and policies are often based on true sets of probabilities.
 
  Indicate whether the statement is true or false

Q. 2

The standard error of the estimate for a multiple regression model with two explanatory variables X1 and X2:
 
  A) measures the variation around the predicted regression equation.
  B) measures the proportion of variation in Y that is explained by X1 and X2.
  C) measures the proportion of variation in Y that is explained by X1 holding X2 constant.
  D) has the same sign as b1.

Q. 3

A sample of 50 students is taken from Utah Valley University (UVU). These students spent an average of 175 on books this semester, with a standard deviation of 25.
 
  A 95 confidence interval for the average amount of money spent on books for all students at UVU is equal to ________. (Hint: Use Excel function to obtain the critical value.)A) 175  3.47
  B) 175  7.18
  C) 175  7.51
  D) 175  3.86

Q. 4

The 5-number summary divides a set of data into four subsets, with one quartile of the data in each subset.
 
  Indicate whether the statement is true or false

Q. 5

What is the difference between a frequency distribution and a relative frequency distribution?
 
  What will be an ideal response?

Q. 6

In order to test if the diet is effective, what is the value of the test statistic?
 
  A) 2.5
  B) 2.0
  C) 1.8
  D) 1.3
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Replies
wrote...
#1
7 years ago
Ans. #1

FALSE

Ans. #2

A

Ans. #3

B

Ans. #4

TRUE

Ans. #5

The basic difference between the frequency and relative frequency distribution is that the relative frequency distribution tells us the proportions or percentages rather than the number of values in each class. This way the data is standardized making it much easier to compare it to other samples and populations.

Ans. #6

A
rahulcena Author
wrote...
#2
7 years ago
found this very helpful thank you
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