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13 December, 06:48

Bella has sampled the heights of 30 students at Ridgemont High and obtained a mean of 64.2 inches. He constructs a 90% confidence interval, which turns out to be (61.0, 67.4). What is the ma

A) 2.1 inches

B) 3.2 inches

C) 4.2 inches

D) 6.4 inches rgin of error?

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Answers (1)
  1. 13 December, 09:42
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    The correct answer for the question that is being presented above is this one: " C) 4.2 inches." Bella has sampled the heights of 30 students at Ridgemont High and obtained a mean of 64.2 inches. He constructs a 90% confidence interval, which turns out to be (61.0, 67.4). The margin of error is C) 4.2 inches
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Home » Mathematics » Bella has sampled the heights of 30 students at Ridgemont High and obtained a mean of 64.2 inches. He constructs a 90% confidence interval, which turns out to be (61.0, 67.4). What is the ma A) 2.1 inches B) 3.2 inches C) 4.2 inches D) 6.
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