Do teachers find their work rewarding and satisfying? An article reports the results of a survey of 395 elementary school teachers and 263 high school teachers. Of the elementary school teachers, 223 said they were very satisfied with their jobs, whereas 124 of the high school teachers were very satisfied with their work. Estimate the difference between the proportion of all elementary school teachers who are satisfied and all high school teachers who are satisfied by calculating a 95% CI. (Use pelementary − phigh school. Round your answers to four decimal places.)

Q: A study of 1000 adults in Indiana State revealed that 19.9 percent are smokers. The population, the…

A: In Indiana State, a survey of 1000 people found that 19.9% of them smoke. The variables of interest,…

Q: A survey of 2390 musicians showed that 304 of them are left-handed. Find a point estimate for p, the…

A: Here Given sample size= n=2390                                         X=304

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A:

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A: Given, total residents = 225 135 are in favor of block party.

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A: The 200 subjects were studied; n=200 120 of them expressed a preference for brand x; x=120

Q: quality conscious disc manufacturer wishes to know the fraction of disks his company makes which are…

A: Given Sample size =865 X=112

Q: Helga scored in the 70th percentile rank on an exam. If 300 students took the exam, how many…

A: Given: percentile rank of Helga: 70th           total number of students who took exam: 300 students…

Q: Human blood is grouped into four types: A, B, AB and O. The percent's of people in Suva with each…

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Q: based on the estimation what is the appropriate conclusion?

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Q: A poll was conducted on a representative sample of 600 adults living in the United States in order…

A: A poll was conducted on a representative sample of 600 adults living in the United States in order…

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Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…

A:

Q: A newspaper infographic titled "Baby's First Photo Reveal" summarized data from a survey of 1,050…

A: Pcap=0.84, n=1050 Zalpha/2=2.576 at alpha=0.01

Q: If a coin is flipped 150 times and the number of Hs is 25. Compute the proportion of Hs. Round to…

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Q: The correlation between a cereal's fiber and potassium contents is r=0.909. What fraction of the…

A: Correlation coefficient(r)=0.909

Q: For a population with u = 80 and o = 10, what is the X value corresponding to z-score = - 2.00? Edit…

A:

Q: A test question is good if it discriminates between prepared and unprepared students. The first…

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Q: Drowning in bathtubs is a major cause of death in children less than 5 years old. A random sample of…

A: We Have to find Estimate the percent of all parents of young children who use baby bathtubs.

Q: A random sample of 4000 U.S.citizens yielded 2280 who are in favor of gun control legislation. Find…

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Q: In a class of 10 students, James got 3rd position from the lowest. What is his percentile rank?

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Q: What proportion of people who correctly solved the problem had the electrical stimulation

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A:

Q: In order to study the mean blood pressure of people in his town, Richard samples the population by…

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Q: In the same group of 20 students, GPA was measured before the semester and after the semester. What…

A: It is given that GPA was measured before the semester and after the semester.

Q: A recent poll of 2940 corporate executives showed that the average price of their cars is $31,800…

A: Introduction: The poll consists of 2940 corporate executives. The average price of the cars owned by…

Q: A software company is interested in improving customer satisfaction rate from the 51% currently…

A: Solution-: Given: X=89,n=157,P0=51%=0.51  We want to find Z=?

Q: At the local college, a study found that students earned an average of 9.2 credit hours per…

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Q: Empathy means being able to understand what others feel. To see how the brain expresses empathy,…

A: The given regression equation is, The predicted value for subject 2 is,

Q: You want to conduct a study on the proportion of Penn State students who miss class when it is…

A: Firstly we need to find the row and column total of the given data table. It is as follows; For on…