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Given that z is a standard normal random variable compute the following probabilities a. P (-1.98- Why does salt raise the boiling point and lower the freezing point? Can factories in the area change the pH in the soil? Compound has an empirical formula of ch and was found to have a mass of 78 grams calculate molecular formula? If I split an integral with a constant in front ,for example (1/2), is there a (1/2) in front of only one integral or both split integrals?