Entrance Ticket 1.6.23

A study by the department of education of a certain state was trying to determine the mean SAT scores of the graduating high school seniors. The study found a confidence interval for the mean score to be between 465 and 499. What is the margin of error on the survey?

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CCSS.HSS.IC.B.4

A study was commissioned to find the mean weight of the BCAM male student-athletes. The study found the mean weight to be 187 pounds with a margin of error of 3 pounds. Which of the following is not a reasonable value for the true mean weight of BCAM male student-athletes.?

• 183.1 pounds

• 189.5 pounds

• 185.1 pounds

• 189.6 pounds

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CCSS.HSS.IC.B.4

A survey was given to a random sample of 150 voters in Brooklyn to ask about their preference for drill rappers. Of those surveyed, 81 respondents said that they preferred Kyle Richh. At the 95% confidence level, what is the margin of error for this survey expressed as a proportion to the nearest thousandth?

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CCSS.HSS.IC.B.4

A survey was given to a random sample of 900 voters in the DR to ask about their preference of bachata. Of those surveyed, 46% of the people said they preferred Anthony Santos.

a. Determine the margin of error.

b. Determine a 95% confidence interval for the percentage of people who prefer Anthony Santos, rounding values to the nearest tenth.

Tags

CCSS.HSS.IC.B.4