In a study of the opinions of all 18-25 year old adults in the United States, which of the following would be the best unbiased sample? O a) A random number generated telephone survey of all 18-25 year old adults O b) Sophomores at the University of Georgia O) 18-25 year olds with children O d) An internet poll of 18-25 year old adults

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A: Solution. To find whether the condition for inferences is met,we will calculate expected count .

Q: 4. This study is based on a random sample of [ Select ] * Gmail Smart Compose users. 63 39 62 40

A: For t test, d.f.= (n-1)

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Q: 2.A college placement officer wants to determine whether male and female business graduates, on…

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A:

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Q: In a study of the opinions of all 18-25 year old adults in the United States, which of the following…

A: Option (c) is correct

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Q: Test at 0.02 level of sig. to test Ho against HA: µ > 5

A: Here use t test

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A:

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A: There is total 100 births.

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Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.