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The width of the confidence interval for a single proportion gets narrower (i.e., smaller) when:

A researcher is wondering whether the drinking habits of adults in a certain region of a country are different than those in the general adult population.  Suppose a recent study states that the proportion of adults in the general population who reported drinking more than once a week in the last month is 0.86.  The null hypothesis for this test is p = 0.86 and the alternative hypothesis is p ≠ 0.86.  The researcher collected data from a random sample of 65 individuals.  Are the conditions for proceeding with a one-proportion z-test satisfied?  If not, which condition is not satisfied?

A student collected heights for a sample of 50 individuals.  He mistakenly recorded the tallest individual as 750 inches rather than 75 inches tall.  Which of the following statistics would be affected by this typo?

Those folks who never leave the U.S. last had a chance to see a total solar eclipse

15). A community is all the living organisms in an area and the nonliving parts of the environment with which they interact. 

7). Ecology can focus on different levels, including individuals and populations. 

6). Ecology is the study of interactions between organisms and their nonliving environment. 

Est-ce que vous aimeriez participer à une fête des voisins. Expliquez. Minimum 50 words.

Read the text below about “la fête des voisins”. Vocabulaire le voisin = neighbor | depuis = since | aider quelqu’un = to help someone | le jardinier = gardener

A federal enforcement agency that handles all claims of discrimination within the workforce is the