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Mean standard deviation and Z score.

1. Listed below are intervals (in minutes) between eruptions of the Old Faithful geyser in Yellowstone National Park. After each eruption, the National Park Service provides an estimate of the length of time to the next eruption. From the sample data below, find the mean and standard deviation for the time between eruptions.
98, 92, 95, 87, 96, 90, 65, 92, 95, 93, 98, 94

2. Stanford Binet IQ scores have the mean of 100 and a standard deviation of 15. Albert Einstein reportedly had an IQ of 160. Convert Einstein's IQ score to a z scoer.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M920102

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