If the standard error of the sampling distribution of the sample proportion is 0.0229 for samples of ...

If the standard error of the sampling distribution of the sample proportion is 0.0229 for samples of size 400, then the population proportion must be either:
 
  A) 0.4 or 0.6
  B) 0.5 or 0.5
  C) 0.2 or 0.8
  D) 0.3 or 0.7

Q. 2

With probability 0.20, the number of successes is greater than how many?
 
  What will be an ideal response?

Q. 3

It is known that for the normal distribution, the population kurtosis is 3.0.
 
  Indicate whether the statement is true or false

Q. 4

The autoregressive equation is:
 
  A) Sales = 104 + 0.231 Saleslag 1 - 0.439 Saleslag 2 + 0.397 Saleslag 3
  B) Sales = 0.397 + 0.231 Saleslag 1 - 0.439 Saleslag 2 + 104 Saleslag 3
  C) Sales = 104 + 0.439 Saleslag 1 - 0.231 Saleslag 2 + 0.397 Saleslag 3
  D) Sales = 0.397 + 0.439 Saleslag 1- 0.231 Saleslag 2 + 104 Saleslag 3

Q. 5

What is the approximate point estimate of the final exam score for a student who has studied for 5.45 hours?
 
  A) 81
  B) 92
  C) 85
  D) 89

Q. 6

Does the data provide enough evidence to conclude that, at the 1 significance level, the final mark and the mid-term test mark show a positive linear relationship?
 
  What will be an ideal response?