When we need to estimate the population mean, and the population standard deviation is unknown, we are

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When we need to estimate the population mean, and the population standard deviation is unknown, we are hit with a “double whammy” when it comes to the margin of error. Explain what the “double whammy” is and why it occurs. (Hint: Consider the sources of variation in the margin of error.)

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Briana Proulx

During the past several years, I have worked alongside numerous educational organizations aimed at providing accessible science education to the public. In 2012, I partnered with the Northeastern Massachusetts Aquaculture Center and A Coast for Every Classroom in a program created to educate K-12 teachers on the ecology and natural history of Massachusetts, in order to incorporate these elements into future lesson plans. Through that program, and in collaboration with Cat Cove Marine Laboratory and Salem State University, I published a series of fact sheets that would act as an identification guide to common intertidal marine species to further the students’ understanding of the habitats located in their own backyards. This same year, I worked as an aquaculture laboratory technician at Cat Cove Marine Laboratory, where, in addition to my aquaculture maintenance duties, I led educational tours and provided introductory marine biology and ecology lessons to visiting middle and high school students. In 2015, I worked as a research assistant at Salem State University, where I collected, compiled, and analyzed climatology data, phenology data, and primary literature sources as a part of a team conducting ongoing research on the effect of climate change on Rosaceae species within Essex County. We presented our preliminary findings at a research symposium sponsored by Sigma Xi, a scientific research honors society, in 2015. That same year, and in partnership with Salem State University, Universidad San Fransisco de Quito, and the Galápagos Academic Institute for the Arts and Sciences, I wrote two literature syntheses, The Effect of Feral Goat Eradication, Endemic Cacti Population Decline, and Woody Vegetation Population Growth on Galápagos Tortoise Population Trends within the Galápagos Islands and Analysis of Annual Migratory Paths to Assess Conservation Actions to Preserve Monarch Populations within the United States and Mexico. Most recently, I have worked as an online tutor for Chegg Tutors in the subjects of agricultural science, animal sciences, basic science, biology, earth science, English, environmental science, literature, natural sciences, study skills, and writing. During my time at Chegg Tutors, I assisted students in drafting, revising, editing, reformatting, and fact-checking essays, technical reports, and other academic papers.

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