Then the number of spelling errors made by students in a five-page assignment after the program is shown. Before 8 3 10 5 9 11 12 7 After 6 4 8 2 4 7 10 7 At 5% significance level, did the program work? Note: 1.no need excel formula 2. No need hand writing

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A: From the above data The correct option of mean is  7.0

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Q: 22. One sample has a mean of M-5 and a second sample has a mean of M- 10. The two samples are…

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Q: At the end of a school day, the Headmaster conducted a survey asking students in how many classes…

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Q: You randomly asked 100 students about their mean exercise time per week. Using the data, you stated…

A: This is an example of inferential analysis .

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Q: Felix has just received his monthly credit card statement. He placed 8 charges on his card in the…

A: Given: 7 Charges 23.63, 20.59, 21.21, 26.85, 24.84, 15.36, 23.60

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A: For the given data Perform Anova single factor

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Q: Show your complete computation then answer what is being asked.

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Q: . A student wants to determine whether people i arming. After a lesson on global warming, she…

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A: The data is given as below.Brothers (x1)Sisters (x2)1315141884413816473194125912147748As the student…

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A: Given: n1=1170n2=1127x1=86x2=105

Q: elow are sample research questions. Identify which T-test (Independent or Dependent) are you going…

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Q: 9. Germaine is researching the reliability of a car she's thinking bf Buylng. Which data source is…

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Q: n a city with three high schools, all the ninth graders took a Standardized Test, with these…

A: Formula : x¯ =x¯1 n1+x¯2 n2 + x¯3 n3n1+n2+n3

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Q: The mean salary for the 40 workers in company A is $97 per week, whereas in company B the mean…

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Q: The mean of 13 numbers is 8. One of the numbers, 11, is deleted. What is the mean of the remaining…

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Q: b. What is the highest grade you would be able to earn in the

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Q: An inductive statistics which involves making forecasts, estimations or judgments, about some larger…

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Q: Students in a math class took a 10 point quiz. The scores were: 3, 6, 6, 7, 7, 8, 8, 8, 8, 8, 8, 9,…

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Q: cw2 In a city with three high schools, all the ninth graders took a Standardized Test, with these…

A: Step 1:Step 2: Step 3: Step 4:

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Q: Explain what the symbols d and s, represent. What does the symbol à represent?

A: The symbol d denotes the difference.