1.) As our sample size increases, standard error typically decreases.
This is because, as sample size increase, we gather more information about the question under study and our error in precise estimation reduces.
Ans. d.
2.) An extraneous variable that covariates with the independent variable is confounding variable.
Confounding variable is a special type of extraneous variable that correlates with both independent and dependent variable.
Ans. b.
standard error typically 1. As our sample size a) decreases; increases b) decreases; decreases c) increases;...
O A. As the sample size decreases, the margin of error decreases ○ B. AS the sample size nonases, the margin of error stays the same. O C. As the sample size inoreases, the margin of error decreases ○ C. As te percent confdence deoreases, the size of the interval increases How does increasing the sample size affect the margin of error, E? O A. O B. As the sample size increases, the margin of error stays the same. As...
As sample size increases, the standart error of mean. a. also increases b. decreases c. stay constant
7. Complete the following with increases, decreases, or remains the same. a) As the sample size increase, the confidence interval _______________ b) As the margin of error increases, the standard deviation _____________ c) As the confidence increases, the sample size _____________ in order to maintain the same margin of error. d) As confidence increases, the standard deviation _____________ e) As confidence level increases, the margin of error _____________
47. What happens to the mean and standard deviation of the distribution of sample means as the size of the sample decreases? A) The mean of the sample means stays constant and the standard error decreases. B) The mean of the sample means increases and the standard error stays. C) The mean of the sample means decreases and the standard error increases. D) The mean of the sample means stays constant and the standard error increases. 48. Find the critical value ze that corresponds to...
In a fixed sample size: as the number of independent variables in a regression model increases, the power of the regression decreases or increases? When a potential confounding variable is found to affect the β-coefficient estimate for the variable of interest in a regression model and is therefore added to the model, the coefficient of determination (R2) increases or decreases?
As the sample size decreases. what happens to the standard deviation of the sampling distribution of p̂? a. It is impossible to tell. b. It increases. c. It decreases. d. It does not change.
Increasing the sample size while keeping the same confidence level has what effect on the margin of error? A. Decreases the margin of error and hence decreases the precision B. Decreases the margin of error and hence increases the precision C. Increases the margin of error and hence decreases the precision D. Increases the margin of error and hence increases the precision E. None of the above The regression line is the straight line that bests fits a set of...
1. With same level of confidence, to decrease the margin of error the sample size... a. stays the same b. decreases c. increases 2. With same margin of error, as the level of confidence increases the sample size... a. decreases b. increases c. stays the same
Why does the standard error of the mean decrease as the sample size, n, increases?
and as the ionic charge (a) decreases, decreases (b) increases, decreases (e) increases, increases (d) decreases, increases (e) none of these? 29. If 15.35 mL of a 0.1036 M NaOH is required to neutralize 25.0 mL of a HCl solution to the phenolphthalein end point, what is the molarity of the HCI solution? e) none of these d) 0.1272 M e) 0.0636 M a) 0.1036 M b) 0.2072 M 30. Which molecules are polar? v) N2 ii) CO2 ii) HCI...