A recent survey showed that from a sample of 500 packages delivered by a Postal Service,480 were delivered on time. The manager of the Postal Services claims that 98 percent of their mail are delivered on time.  Calculate and Test at the 1% significance level to determine whether the true proportion is less than 98 percent. use the appropriate statistical table and show all workings

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.