Mathematics, 18.03.2021 01:40 almavaldez45
34. Crawling Babies The following data represent the age (in weeks) at which babies first crawl based on a survey of 12 mothers conducted by Essential Baby. 52 30 44 35 39 26 47 37 56 26 39 28 Source: www. essentialbaby (a) Draw a normal probability plot to determine if it is reasonable to conclude the data come from a population that is normally distributed. (b) Draw a boxplot to check for outliers. (c) Construct and interpret a 95% confidence interval for the mean age at which a baby first crawls.
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Asmall (but heavy) particle placed in a glass of water will follow a zigzag motion because the particle will bounce off of the water molecules it meets. this is called brownian motion. a physicist simulates this on a computer, by varying the distance a particle can travel (called the mean free length), on average, before it collides with a water molecule and assigning the change in motion to be one of 8 directions, each with a similar probability. by running the simulated particle (with the same mean free length) many times she determines that it should take 15 seconds, on average, for the particle to fall to the bottom, with a standard deviation of 1.5 seconds. next she lets a real particle fall through a glass of water and finds that it took 18 seconds. what does she conclude, and why?
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34. Crawling Babies The following data represent the age (in weeks) at which babies first crawl base...
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