2. Under the null hypothesis, what is the expected number for people with an education of Some college and a smoking status of Former?expected value =3. Calculate the x test statistic.x2 =4. What was the contribution of Former smokers who attended Some college toward this test statistic?Contribution =5. What are the degrees of freedom for this test?df =6. What is the p-value for this test?p-value Smoking and Education - A researcher is interested in whether the number of years of formal education is related to a person's decision to neversmoke, continue to smoke, or quit smoking cigarettes. The data below represent the smoking status by level of education for residents of the UnitedStates 18 years or older from a random sample of 450 residents.Round all calculated answers to four decimal places.Smoking StatusEducation LevelCurrentFormerNeverLess than high school332536High school262040Some College3274164

Solution: The observed count table is Education Level Current Former Never Row Total Less…

Answered: mterested year moke, continue to smoke,…

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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A math teacher asks each student how much time they spent studying for their last math test. She then checks each student’s overall mark. Is this case an experimental study or an observational study? 1.experimental study 2.observational study
A study was conducted to examine the impact of speaking in public on college students. A class of 15 statistics students participated in the study. At the beginning of a lecture the students recorded their systolic blood pressure. During the lecture the instructor called on each student to stand and answer questions about topics in the lecture. After speaking the students once again recorded their blood pressure. The resulting values are given below along with summary statistics. before 100 123 128 125 136 108 130 113 105 136 146 138 108 149 132 after 141 142 146 136 144 111 132 114 103 133 140 130 100 133 113 difference -41 -19 -18 -11 -8 -3 -2 -1 2 3 6 8 8 16 19 before after difference mean 125.1 127.9 -2.733 st dev 15.26 15.45 15.23 Does this information indicate that blood pressure increased because of speaking? Conduct an appropriate hypothesis test and show appropriate steps. Let μ1 mean systolic blood pressure before speaking in public, and μ2 mean…
A study was conducted to examine the impact of speaking in public on college students. A class of 15 statistics students participated in the study. At the beginning of a lecture the students recorded their systolic blood pressure. During the lecture the instructor called on each student to stand and answer questions about topics in the lecture. After speaking the students once again recorded their blood pressure. The resulting values are given below along with summary statistics. before 107 123 128 125 136 108 130 113 105 136 146 138 108 149 132 after 141 142 146 136 144 111 132 114 103 133 140 130 100 133 113 difference -34 -19 -18 -11 -8 -3 -2 -1 2 3 6 8 8 16 19 before after difference mean 125.6 127.9 -2.267 st dev 14.53 15.45 14.03 Does this information indicate that blood pressure increased because of speaking? Conduct an appropriate hypothesis test and show appropriate steps. Let μ1 mean systolic blood pressure before speaking in public, and μ2 mean…
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Subject : Basic Statistics 2. I've posted an image of the question.
To buy tickets to a local concert, attendees were asked to mark their age group for data collection purposes. The results are located in the table below. What is the average age of someone attending this concert? Round to the nearest whole number. Age Number Attending 15 36 20 134 25 98 30 214 35 186 40 41
50 part-time students were asked how many courses they were taking this term. The (incomplete) results are shown below: # of Courses Frequency Relative Frequency Cumulative Frequency 1 24 0.48 2 15 3 a. Complete the table.b. What percent of students take exactly one course? %
A group of students were surveyed about the number of siblings they have. Their responses are summarized in the frequency table below. How many students responded to the survey? Number of Siblings Frequency 0 6 1 8 2 5 3 3 4 1 5 or more 3
Determine if the numerical value describes a parameter or a statistic. A survey of 1040 people in the U.S. revealed that 60% of those surveyed are self-conscious about their weight. Population Parameter or Sample Statistic

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