A survey is conducted to determine if there is aBecause the P-value of this test is large, there is notconvincing evidence that the distribution of responsesfor the population of all students, parents, andteachers of this large high school differs. For whichcategories are the observed counts greater thanexpected?difference in the proportion of students, parents, andteachers who volunteer at least once a month. Toinvestigate, a random sample of 45 students, 25parents, and 12 teachers was selected from a largehigh school. The data are displayed in the tables.Observed counts:O There were more students than expected who doStudent Parent TeacherYesNonot volunteer, and more parents and teachers thanexpected who do volunteer.24126Volunteer?21136There were more students than expected who dovolunteer, and more parents and teachers thanexpected who do not volunteer.Expected counts:There were more teachers than expected who doStudent Parent Teachernot volunteer, and more students and parents thanexpected who do volunteer.Yes23.0512.806.15Volunteer?No21.9512.205.85There were more teachers than expected who doThe researcher would like to test these hypotheses:volunteer, and more students and parents than high school. The data are displayed in the tables.expected?Observed counts:Student Parent Teacher12There were more students than expected who donot volunteer, and more parents and teachers thanexpected who do volunteer.Yes246Volunteer?No21136There were more students than expected who dovolunteer, and more parents and teachers thanexpected who do not volunteer.Expected counts:O There were more teachers than expected who doStudent Parent Teachernot volunteer, and more students and parents thanexpected who do volunteer.12.80YesNo23.056.15Volunteer?21.9512.205.85There were more teachers than expected who dovolunteer, and more students and parents thanexpected who do not volunteer.The researcher would like to test these hypotheses:Ho: There is no difference in the distribution ofresponses among these three populations.Hạ: There is a difference in the distribution ofresponses among these three populations.

Given info: Since P-value is greater than any reasonable significance level, there is not convincing…

Answered: A survey is conducted to determine if…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Give an example of a study for which the one sample z-test would the appropriate test statistic to use.
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suppose that in a random selection of 100 colored candies, 27% of them are blue. The candy company claims that the percentage of blue candies is equal to 23%. Use a 0.10 significance level to test that claim
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From the U.S. Census Bureau’s American Community Survey in 2019 it was found that 33.13%of United States residents over the age of 25 had an educational attainment of a bachelor’sdegree or higher. In the District of Columbia, the percentage of residents over the age of 25 whohad attained a bachelor’s degree or higher was 59.67%. An investigator for the U.S. CensusBureau took a random sample of seven residents from the District of Columbia and asked themtheir highest educational degree they had obtained. a) Verify that the sample from the District of Columbia satisfies the conditions of thebinomial experiment. Write one sentence to check each requirement in context of theinvestigation.b) Assuming the sample from the District of Columbia is a binomial experiment, build theprobability distribution in a single table and include the table in your solutions. You maypresent this table horizontally or vertically and leave the probabilities unrounded. Thereare two possible ways to do this: To…
It is believed that 11% of all Americans are left-handed. A college needs to know how many left-handed desks to place in the big lecture halls being constructed on its campus. In a random sample of 340 students from that college, whether or not a student was left-handed was recorded for each student. The college wants to know if the data provide enough evidence to show that students at this college have a different percentage of left- handers than the general American population? State the random variable, population parameter, and hypotheses. State the Type I and Type II errors in the context of this problem. a) The symbol for the random variable involved in this problem is ? ✓ The wording for the random variable in context is as follows: Select an answer b) The symbol for the parameter involved in this problem is The wording for the parameter in context is as follows: Select an answer c) Fill in the correct null and alternative hypotheses: Ho?? ✓ HA: ? ✓ ? ✓ d) A Type I error in the…
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It is believed that 11% of all Americans are left-handed. A college needs to know how many left-handed desks to place in the big lecture halls being constructed on its campus. In a random sample of 210 students from that college, whether or not a student was left-handed was recorded for each student. The college wants to know if the data provide enough evidence to show that students at this college have a different percentage of left-handers than the general American population? State the random variable, population parameter, and hypotheses. State the Type I and Type II errors in the context of this problem.a) The symbol for the random variable involved in this problem is The wording for the random variable in context is as follows: b) The symbol for the parameter involved in this problem is The wording for the parameter in context is as follows: c) Fill in the correct null and alternative hypotheses: H0:H0: HA:HA:…
It is believed that 11% of all Americans are left-handed. A college needs to know how many left-handed desks to place in the big lecture halls being constructed on its campus. In a random sample of 210 students from that college, whether or not a student was left-handed was recorded for each student. The college wants to know if the data provide enough evidence to show that students at this college have a higher percentage of left-handers than the general American population? State the random variable, population parameter, and hypotheses. State the Type I and Type II errors in the context of this problem.
Suppose that in a random selection of 100 colored candies, 23% of them are blue. The candy company claims that the percentage of blue candies is equal to 26%. Use a 0.05 significance level to test that claim.

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