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Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 3BGP

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Indicate the type of hypothesis ech of the following, whehter it is directional or non directional.

(a) mean_vocabulary assestment = mean_ reading assestment

(b) Eating jelly beans causes damages in the amount of cavities in adults and children

(c) More coffee is consumed in Italy than in canada

(d) doing practical activites has a negative relationship or no relationship with research

methods comprehension

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The U.S. Golf Association provides a number of services for its members. One of these is the evaluation of golf equipment to make sure that the equipment satisfies the rules of golf. For example, they regularly test the golf balls made by the various companies that sell balls in the United States. Recently they undertook a study of two brands of golf balls with the objective to see whether there is a difference in the mean distance that the two golf ball brands will fly off the tee. To conduct the test, the U.S.G.A. uses a robot named "ron Byron," which swings the club at the same speed and with the same swing pattern each time it is used. The following data reflect sample data for a random sample of balls of each brand.
The director of research and development is testing a new medicine. She wants to know if there is evidence at the 0.01 level that the medicine relieves pain in more than 335 seconds. For a sample of 85 patients, the mean time in which the medicine relieved pain was 338 seconds. Specify the type of hypothesis test. -Left tailed test -Right tailed test -Two Tailed test
Based on a recent study about language development, it is recommended children learn a second language when they are 10 years old. A linguist believes the average age children learn a second language is less than the age stated in the study. To test this claim, at the 2.5% significance level, the linguist collects the following data on a sample of 21 children learning a second language and records the age of when they started learning the second language. The following is the data from this study: Sample size =21 childrenSample mean =9.2 years oldSample standard deviation =2.5 years old Identify the null and alternative hypothesis for this study by filling in the blanks with the correct symbol (=,≠,<, or > to represent the correct hypothesis.) Provide your answer below: null hypothesis : $\mu$μ 10 alternative hypothesis : $\mu$μ 10

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