# Question

The paper "Correlations Between the Intrauterine Metabolic Environment and Blood Pressure in Adolescent Offspring of Diabetic Mothers" (Journal of Pediatrics, Vol. 136, Issue 5, pp. 587-592) by N. Cho et al. presented findings of research on children of diabetic mothers. Past studies have shown that maternal diabetes results in obesity, blood pressure, and glucose-tolerance complications in the offspring.

The WeissStats CD provides data on systolic blood pressure, in mm Hg, from independent random samples of 99 adolescent offspring of diabetic mothers (ODM) and 80 adolescent offspring of nondiabetic mothers (ONM).

a. Obtain normal probability plots, boxplots, and the standard deviations for the two samples.

b. At the 5% significance level, do the data provide sufficient evidence to conclude that the mean systolic blood pressure of ODM children exceeds that of ONM children?

c. Determine a 95% confidence interval for the difference between the mean systolic blood pressures of ODM and ONM children.

d. Are your procedures in parts (b) and (c) justified? Explain your answer.

The WeissStats CD provides data on systolic blood pressure, in mm Hg, from independent random samples of 99 adolescent offspring of diabetic mothers (ODM) and 80 adolescent offspring of nondiabetic mothers (ONM).

a. Obtain normal probability plots, boxplots, and the standard deviations for the two samples.

b. At the 5% significance level, do the data provide sufficient evidence to conclude that the mean systolic blood pressure of ODM children exceeds that of ONM children?

c. Determine a 95% confidence interval for the difference between the mean systolic blood pressures of ODM and ONM children.

d. Are your procedures in parts (b) and (c) justified? Explain your answer.

## Answer to relevant Questions

An independent golf equipment testing facility compared the difference in the performance of golf balls hit off a regular 2-3/4'' wooden tee to those hit off a 3'' Stinger Competition golf tee. A Callaway Great Big Bertha ...If the assumptions for a pooled t-interval are satisfied, the formula for a (1 − α)-level upper confidence bound for the difference, μ1 − μ2, between two population means is For a left-tailed hypothesis test at the ...x1 = 10, s1 = 2, n1 = 15, . x2 = 12, s2 = 5, n2 = 15 a. Two-tailed test, α = 0.05 b. 95% confidence interval We have provided summary statistics for independent simple random samples from two populations. In each case, ...Refer to Example 10.6 on page 411. The researchers also obtained the following data on the number of acute postoperative days in the hospital using the dynamic and static systems. At the 5% significance level, do the data ...Refer to Exercise 10.76 and find a 99% confidence interval for the difference between the mean wing lengths of the two subspecies.Post your question

0