Never knew how to do this.

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Select the number below that you think is correct - or prefer.

Are these correct, esp. the commas?

1a. The baby weighed 9 pounds, 7 ounces. Comma?
2a. The baby weighed 9 pounds 7 ounces. No commas?

3a. adjective before noun: a 9-pound, 7-ounce baby
4a. OR: a 9-pound-7-ounce baby (3 hyphens for the compound adjective?)
5a. OR: a 9 pound 7 ounce baby boy (no hyphens or commas at all?)

1b. He stood 6 feet, 2 inches tall. Comma?
2b. He stood 6 feet 2 inches tall. No commas?

3b. adjective before noun: a 6-foot, 2-inch man
4b. OR: a 6-foot-2-inch man (3 hyphens for the compound adjective?)
5b. OR: a 6 foot 2 inch man (no hyphens or commas at all?)

Thanks a million.Emotion: smile
You might find this helpful:
Pounds and Ounces / Height and Weight
This one's really got me swinging. Can't find an answer anywhere. Most style books and websites do not cover this.
Students: Are you brave enough to let our tutors analyse your pronunciation?
 Yankee's reply was promoted to an answer.
From Painless Grammar:

Her Baby is a beautiful seven-pound, ten-ounce boy.

Or: Her baby is a beautiful 7-pound, 10-ounce boy.