Mathematics, 05.05.2021 02:40 jadenbun
Wll give 20 points
A researcher posts a print advertisement offering $20 in exchange for participation in a short study. The researcher accepts the first five people who respond to the advertisement. Which of the following statements is true about the sample? (1 point)
Group of answer choices
It is a valid sample because the first five people were selected to participate.
It is not a valid sample because it is not a random sample of the population.
It is a valid sample because money was offered to participants.
It is not a valid sample because it is only a short study.
Answers: 2
Mathematics, 21.06.2019 15:30
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Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?
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Mathematics, 21.06.2019 20:50
An object is translated by (x + 4, y - 2). if one point in the image has the coordinates (5, -3), what would be the coordinates of its pre-image? (9, -5) (1, -5) (9, -1) (1, -1)
Answers: 1
Wll give 20 points
A researcher posts a print advertisement offering $20 in exchange for participa...
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