Following an investigation of 250 households in Gombak, Kuala Lumpur, researchers discovered that, on average, 32 kg of food waste is generated every day, with a standard deviation of 4 kg. Considering a random sample of 36 households, what is the likelihood that the total amount of food waste produced will range between 31 kg and 32.5 kg? a) Find the z-value for the mean b) Find the area corresponding to the z-value c) What is the probability that the total amount of food waste produced will range between 31 kg and 32.5 kg?

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