12. The principal of a school wanted to see how the SAT scores compared when given two different programske an SAT class during the school day every other day and Group 2 was assigned to a local prep class on
study. A total of 18 students were randomly assigned to two equal sized groups. Group I was assigned to take
Saturdays. The final SAT scores for each group are shown in the table below. What inference can be made
about the results?
Group 1
Group 2
580
610
590
540
490
510
520
560
580
540
450
560
430
530
530
500
520
470
Mean: 553
Mean: 503
(a) Calculate Xz - X2. [2 points]

answer: -1

step-by-step explanation:

i think it might be a but you might want a second opinion

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.

d

step-by-step explanation:

the 2000 florida legislature amended section 322.05, florida statutes, changing the requirements to obtain a class e license for a driver under the age of 18 holding a learner's license. the following requirements must be met in order to obtain a regular class e license if a learner's license is issued on or after october 1, 2000:

must hold a learner's license for at least 12 months or until the 18th birthday.

must have no convictions 12 months from the issue date of the learner's license.

may have one traffic conviction within 12 months from the issue date of the learner's license if adjudication is withheld.

a parent, legal guardian, or responsible adult over 21 years old must certify that the driver has 50 hours driving experience, including 10 hours of night time driving.