Unit Test — Unit test Answers

A shipping company claims that 95% of packages are delivered on time. A student wants to conduct a simulation to estimate the number of packages that would need to be randomly selected to find a package that was not delivered on time. The student assigns the digits to the outcomes.00-04 = package not delivered on time05-99 = package delivered on timeHere is a portion of a random number table.Beginning at line 1, and starting each new trial right after the previous trial, carry out 5 trials of this simulation. Based on the 5 trials, what proportion of the time can the shipping company expect to select more than 2 packages before finding one that was not delivered on time?

At a certain pizzeria, it is known that 12% of orders are for extra-large pizzas. What is the probability that the 6th pizza ordered is the first extra-large pizza?

Consider the given probability histogram of a binomial random variable.

A child is playing a card game where, if she does not have a red card in her hand, she must draw cards from the deck, and keep the cards she draws, until she draws a red card.

A local sandwich shop makes an Italian sandwich that contains ham, salami, and pepperoni meats. Let X represent the weight of ham, Y represent the weight of salami, and Z represent the weight of pepperoni for each Italian sandwich made. The mean of X is 2 ounces, the mean of Y is 1.25 ounces, and the mean of Z is 1.75 ounces. What is the mean of the sum, S = X + Y + Z?