Question 1234

1. A sample of 4D men who claimed to engage in a variety of sports activities [In ultisporti. The mean body mass index [BMI] for these men was 22.#1 with standard deviation of 1.22. A sample of 30 male rugby players had a mean BMI of 22.25 with standard deviation of 2.64. Is there any sufficient evidence for one to claim that, in general, rugby players have less BMI than the multisport men? Let 0. = DDI. {2=-9.2?. Reject H0]: 2. A. test designed to measure mothers' attitudes toward their labor and delivery experiences was given to two group of new mothers. Sample 1 {attendersi had attended prenatal classes held at the local health department. Sample 2 [non-attendersl did not attend the classes. The sample sizes and means and standard deviations of the test scores were as follows: Do these data provide sufficient evidence to indicate that attenders, on the average, score higher than nonattenders? Let c: = D.D5 [#336, Reject Hill 3. Cortisol level determinations were made on two samples of women at childbirth. Group 1 subiects underwent emergency cesarean section Induced labor. Group 1 subjects delivered by either cesarean section or the vaginal route following spontaneous labor. The samples sizes, mean cortisol levels, and standard deviations were as follows: Do these data provide sufficient evidence to indicate a difference In the mean cortisol levels In the populations represented? Let it =O.I'.15. lt=-E., Reject Ho} 4. The researchers studied the fine motor skills of ill children receiving occupational therapy. They used an index of fine motor skills the measured hand use, eye-hand coordination. and manual dexterity before and after Ii months of occupational therapy. Higher values indlnte stronger fine motor skills. The score appear in the following table. Can one conclude the basis data that after 2 months, the fine motor skills in population of similar subjects would be stronger":I Let o = DDS