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A study was conducted to investigate the relationship between maternal smoking during pregnancy and the presence of congenital malformations in the child. Among children who suffer from an abnormality other than Down's syndrome or an oral cleft, 32.8% have mothers who smoked during pregnancy. This proportion is homogeneous for children with various types of defects.
A) If you were to select repeated samples of size 25 from this population, what could you say about the distribution of the sample proportions? List 3 properties.
B) Among the samples of size 25, what fraction has a sample proportion of .45 or higher?
C) What fraction has a sample proportion of .20 or lower?
D) What value of p cuts off the lower 10% of the distribution?
mortgage broker is offering home mortgages at a rate of 9.5%, but the broker is fearful that this valueis higher than many others are charging. A sample of 40 mortgages filed in the county courthouse shows anaverage of 9.25% with a standard deviation..
find and attach a cross tabulation of data that is of interest to you. write a question for the following along with
Calculate the standard deviation of BMI. Calculate the median BMI. The following are body mass index (BMI) scores measured in 12 patients who are free of diabetes.
1.a study was conducted to explore the relation between alcohol consumption and hypertension. 7400 nurses were surveyed
A location along a 500 foot assembly line from which to observe the work habits of the workers on the line. What is the probability that the point she selects: is within 25 feet of the end of the line.
aeroplanes arrive at chicagos ohare airport at the average rate of 5.5 per minute. air traffic controllers can safely
Using a level of significance of .05, is there evidence that the dual degree students are receiving lower grades? Explain.
Nielsen publishes a weekly ranking of television programs as well as a weekly ranking of four major networks: ABC, CBS, NBC, and Fox. What kinds of decision or actions are based on the Nielsen rankings?
The final grades for a random sample of MKT 380 students are as follows: What is the standard deviation for these data?
1. correlation concerns the relationship between the values of variables. regression analysis determines the nature of
One advantage of the repeated measures ANOVA is that it eliminates "individual differences" as a source of variability. Explain why there are no individual differences in the numerator and in the denominator of the F ratio.
Ages of 56 attendees of a Harry Potter movie are shown. (a) Form seven age classes (10 to 20, 20 to 30, etc.). Tabulate the frequency of attendees in each class.
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