It has been observed that some persons who suffer colitis, again suffer colitis within one year of the first episode. this is due, in part, to damage from the first episode. the performance of a new drug designed to prevent a second episode is to be tested for its effectiveness in preventing a second episode. in order to do this two groups of people suffering a first episode are selected. there are 118 people in the first group and this group will be administered the new drug. there are 127 people in the second group and this group wil be administered a placebo. after one year, 12% of the first group has a second episode and 13% of the second group has a second episode. select a 90% confidence interval for the difference in true proportion of the two groups. a) [-0.060, -0.043] b) [-0.080, 0.060] c) [-0.093, 0.073] d) [-0.580, 0.560] e) [-0.073, 0.093] f) none of the above

b) [-0.080, 0.060]

Step-by-step explanation:

The confidence interval for the difference in true proportion of the two groups. is given by :-

, where = Sample size for first group.

= Sample size for second group.

= Sample proportion for first group.

= Sample proportion for second group.

z* = critical z-value.

As per given , we have

,  ,  ,

Critical value for 90% confidence interval is 1.645. (By z-table)

Substitute all values in formula , we get

Hence, the 90% confidence interval for the difference in true proportion of the two groups. is (-0.080, 0.060)

Hence, the correct answer is b) [-0.080, 0.060]

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.

the answer is c

step-by-step explanation: i took a test with this question on it