The lag problem associated with monetary policy is due mostly to
a. the fact that business firms make investment plans far in advance.
b. the political system of checks and balances that slows down the process of determining monetary policy.
c. the time it takes for changes in government spending to affect the interest rate.
d. all of the above are correct.

Based on what you learned about time management which of these statements are true

The usa today reports that the average expenditure on valentine's day is $100.89. do male and female consumers differ in the amounts they spend? the average expenditure in a sample survey of 47 male consumers was $135.67, and the average expenditure in a sample survey of 38 female consumers was $68.64. based on past surveys, the standard deviation for male consumers is assumed to be $34, and the standard deviation for female consumers is assumed to be $17.

One principle of usability testing is that it permeates product development. what does that mean?