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2. The NHTSA crash test data for newr cars in saved in CRASH.txt. Assess whether the driver's head- injury ratings are approximately normally distributed. 3.

2. The NHTSA crash test data for newr cars in saved in CRASH.txt. Assess whether the driver's head- injury ratings are approximately normally distributed. 3. Suppose a random variable best described by a uniform probability distribution with c=20 and d=45. a] Find x). b] Find the mean and standard deviation of x

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