Hvac heating & air conditioning, inc., is a public company whose shares are traded in thepublic securities markets. under the sarbanes-oxley act of 2002, to ensure that hvac's financialresults are accurate and timely, the firm's senior officers must set up and maintain
(a) internal "disclosure controls and procedures.
(b) external "release and reveal timetables.
(c) personal "peruse and review liability policies.
(d) public "information and discussion forums.

Penny poodle wanted to know which dog obedience training program was more effective: puppy pride, the approach she has been using for any years, or doggie do-right, a new approach. penny convinced 50 human companions of untrained dogs to participate in her study. the dogs and their humans were randomly assigned to complete the puppy pride or doggie do-right course. at the end of the training programs, all of the dogs were scored on their level of obedience on a standardized dog obedience checklist (scores could range from 10 to 100). the design of this study is: