Suppose the regional express delivery service wants to estimate the cost of shipping a package (y) as a function of cargo type, where cargo type includes the following possibilities: fragile, semi fragile, and durable. Costs for 15 randomly chose packages od approximately the same weight and same distance shipped, but of different cargo types are provided in the excel sheet titled ( prob 28) a. Formulate a multiple regression model to predict the costs of shipping a given package
b. Estimate the formulated model using the given sample data, and interpret the estimated regression coefficients.
c. According to the estimated regression model, which cargo type is the least costly to ship?
d. How well does the estimated model fit the given sample data? How can the models goodness of fit be improved?
e. Given the estimated regression model, predict the cost of shipping a package with semi fragile cargo

"it's not the heat, it's the humidity".   that's a partly valid phrase you may have heard in the summer, but it's actually both.   the heat index, also known as the apparent temperature, is what the temperature feels like to the human body when relative humidity is combined with the air temperature.   this has important considerations for the human body's comfort.   when the body gets too hot, it begins to perspire or sweat to cool itself off.   if the perspiration is not able to evaporate, the body cannot regulate its temperature.   evaporation is a cooling process.   when perspiration is evaporated off the body, it effectively reduces the body's temperature.   when the atmospheric moisture content (i.e. relative humidity) is high, the rate of perspiration from the body decreases.   in other words, the human body feels warmer in humid conditions.   the opposite is true when the relative humidity decreases because the rate of perspiration increases.   the body actually feels cooler in arid conditions.   there is direct relationship between the air temperature and relative humidity and the heat index, meaning as the air temperature and relative humidity increase (decrease), the heat index increases (decreases).

step-by-step explanation:

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step-by-step explanation: