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About 42.3% of Californians and 19.6% of all Americans over age 5 speak a language other...

About 42.3% of Californians and 19.6% of all Americans over age 5 speak a language other than English at home. Survey 20 people that you know that live in Maryland. Conduct a hypothesis test to determine if the percent of Marylanders who speak a language other than English at home is different from 42.3%. Use a significance level of 0.05.

a. Survey results: 6 yes, 14 no

b. state your claim

c. null hypothesis and alternative hypothesis

d. which type of test are you running. Show calculator input.

e. P-value f. Decision: reject null or fail to reject null

g. conclusion:

h. calculate a 90% confidence interval to estimate the proportion of marylanders who speak a language other than english at home. Write it in sentence format.

i. Does the confidence interval agree or contradict your hypothesis test conclusion? Why?

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