STATISTICAL TECHNIQUES AND TOOLS
CONFIDENCE INTERVALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The lengths of individual shellfish in a population of 10, 000 shellfish are approximately normally distributed with mean 10 centimeters and standard deviation 0.2 centimeter. Which of the following is the shortest interval that contains approximately 4, 000 shellfish lengths?
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0 cm to 9.949 cm
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9.744 cm to 10 cm
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9.744 cm to 10.256 cm
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9.895 cm to 10.105 cm
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.9280 cm to 10.080 cm
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Explanation:
Detailed explanation-1: -At what percentile is Aliyaah’s height, and how does her height compare to Jayne’s height? a. Aliyaah’s height is at the 67th percentile of the distribution, and she is shorter than Jayne.
Detailed explanation-2: -The most useful graph for displaying the relationship between two quantitative variables is a scatterplot.
Detailed explanation-3: -Which of the following distinguishes an observational study from a randomized experiment? In an observational study treatments are not randomly assigned, whereas in a randomized experiment treatments are randomly assigned.
There is 1 question to complete.