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An Educational Testing Service Designed an Achievement Test So That

question 108

Essay

An educational testing service designed an achievement test so that the range in student
scores would be greater than 420 points. To determine whether the objective was achieved, the testing service gave the test to a random sample of 30 students and found that the sample mean and variance were 759 and 1943, respectively. Conduct the test for H0:σ2=4900 vs. Ha:σ2>4900 using α=.025. Assume the range is 6σH _ { 0 } : \sigma ^ { 2 } = 4900 \text { vs. } H _ { \mathrm { a } } : \sigma ^ { 2 } > 4900 \text { using } \alpha = .025 \text {. Assume the range is } 6 \sigma \text {. }


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Long-Term Memory

The phase of the memory process that is responsible for the storage of information over an extended period, ranging from hours to a lifetime.

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A switch that alternates between two states with each actuation, commonly found in electronics and applications requiring binary settings.

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The mechanism or system used to adjust the loudness of audio output in electronic devices or sound systems.

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