Mathematics

Mathematics, 02.11.2019 12:31, Jonah58

Asample of 469 teenage births at a large city hospital is observed for the number of births resulting in twins. the 95% confidence interval for the proportion of all births among teenage girls resulting in twins was estimated to be (0.006, 0.026). what is the margin of error for this interval?

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Biology, 12.09.2019 23:30, janayshas84

Over a period of several years, a large hospital kept track of the number of births of babies displaying the trait achondroplasia. achondroplasia is a very rare autosomal dominant condition resulting in dwarfism with abnormal body proportions. after 120,000 births, it was noted that there had been 27 babies born with achondroplasia. one physician was interested in determining how many of these dwarf babies result from new mutations and whether the apparent mutation rate in his area was higher than normal. he looked up the families of the 27 dwarf births and discovered that 4 of the dwarf babies had a dwarf parent. what is the apparent mutation rate of the achondroplasia gene in this population? is it unusually high or low?

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Social Studies, 17.10.2019 15:00, neon1393

In 2001 a national vital statistics report indicated that about 3% of all births produced twins. is the rate of twin births smaller among very young mothers? data from a large city hospital found that only 7 sets of twins were born to 469 teenage girls. test an appropriate hypothesis and state your conclusion under

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