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Here are 4 deviation scores from a normal distribution: -4, -1, 0, +5
Which deviation score corresponds to the distribution’s mean?
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- A standardized exam is known to be normally distributed with a mean score of 82 and a standard deviation of 6.58 in the examination. (Hint: so this means you can convert individual exam scores to z-scores and calculate percentile rank). One student named Amy has an exam score of 78. For Amy's score, use the z score and please compute the percentile rank. Make sure to round the z-score to the nearest hundredth place (Hint if the z-score is 0.3615, then you round it to 0.36) so your calculations are correct.A student collects a series of six groundwater samples from a well. She measures the dissolved oxygen concentration in six of these. Her observations in mg/L are: 8.8, 7.1, 7.2, 8.2, 7.6, 8.6. Plot a graph based on the given values above. Find the mean of the different samples collected and Find the variance. Kindly encode your answers and complete solutions. Thank you!If the number of significant figures is 6, what is the value of the pre-specified Error(?s) Select one: O a 0.000005% O b. 0.0005% O c. 0.005% ০ d 0.00005%
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