An author argues that more American-born baseball players have birth dates in the months immediately following July 31 because that was the age cutoff date for nonschool baseball leagues. The table below lists months of births for a sample of American-born baseball players and foreign-born baseball players. Using a 0.05 significance level, is there sufficient evidence to warrant rejection of the claim that months of births of baseball players are independent of whether they are born in America? Do the data appear to support the author's claim? Jan. Feb. March April May June July Aug. Sept. Oct. Nov. Dec. Bom in America 387 332 365 348 336 310 312 501 422 431 401 370 100 102 83 Foreign Born 100 82 84 81 94 82 59 92 70 Identify the null and alternative hypotheses for this test. OA. Ho: Months of births of baseball players are dependent of where they are bom. H;: Months of births of baseball players are independent of where they are born. OB. Ho: Months of births of baseball players are independent of where they are born. H;: Months of births of baseball players are dependent of where they are bom. OC. Ho: The frequency of births is dependent of the month. H: The frequency of births is independent of the month. OD. Ho: The frequency of births is independent of the month. H;: The frequency of births is dependent of the month.

use a hypothesis test to determine if the proportions are statistically different. A recent survey showed that in a sample of 100 elementary school teachers, 15 were single. In a sample of 180high school teachers, 36 were single. Is the proportion of high school teachers who were single greater than theproportion of elementary teachers who were single? Use ΅ = 0.01.

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unrest and violence on one southern campus had decreased by 62% from 10 years ago. four out of then americans brush their teeth daily. which of the following is true regarding these two statements? a. these statements are derived from inductive statistics b. all of the given statements are sample parameters rather than population statistics. c. statistics, from one of it definitions, constitutes a collection of such statements. d. these types of statements are usually found to be exampls of lying with statistics.  e. nonof these is correct.

a)  Carefully define the null and alternative hypotheses of the ?2 test of the above table.  b)  Find the missing values ‘*’, ‘**’, ‘***’ ??, ???  c)  What is the conclusion of this test? Give reasons for your answer.

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Null and alternative hypotheses are statements about O a. None of these O b. b. sample statistics C. it depends - sometimes population parameters and sometimes sample statistics. O d. d. sample parameters e. population parameters

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* Vational Household: Based on the tried old is 43.6.1 is the eis ley on Drug Abuse, the per on Drug Abuse, the percentage of 17-year-olds who ever relative risk of ever smoking for a 17-year-old versus a 12-year- who ever tried smoking smoking for a 12-year-old (i.e. what was the percentage of 12-year-olds

In hypothesis testing, if the test statistic falls in the critical region then we reject the null hypothesis. a. Trueb. False