There are two more assignments in a class before its end, and if you get an A on at leastone of them, you will get an A for the semester. Your subjective assessment of your performance is
A on paper and A on exam .25
A on pap
Please show work.
23. The time needed to complete a finalexamination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes.
Answer the following questions.
a. What is theprobability of completing theexam in one hour or less?
b. What is the probabil
Gary Schwartz is the top salesman for his company. Records indicate that he makes a sale on 70% of his sales calls. If he calls on four potential clients, what is theprobabilitythat he makes exactly 3 sales? What is theprobabilitythat he makes exactly 4 sales?
At a large university, 500 freshmen take their finalexam for their marketing course. Scores are normally distributed with a mean 79 and standard deviation 7. What is theprobability of a score, X, falling between 73 and 83?
A certain tennis player makes a successful first serve 67% of the time. Assume that each serve is independent of the others. If she serves 8 times, what's theprobabilitythat gets exactly six serves in?
See attachment for data.
What is theprobabilitythatthe student is a junior and makes a B in the course?
What is theprobabilitythatthe student does not make a A in the course, given thatthe student is a senior?
What is theprobabilitythatthe student makes a D or F in the course?
Let A be the event t
1. The weight of a one cubic yard bag of landscape mulch is normally distributed with a mean of 40 pounds and a standard deviation of 2 pounds.
a. What is theprobabilitythat a bag will weigh less than 40 pounds?
b. What is theprobabilitythat a bag will weigh between 38 and 40 pounds?
Consider the following contingency table:
Under 20 21-30 31-40
Male 12 12 17
Female 13 16 21
a. If oneperson is selected at random, what is theprobabilitythatperson is Female? ______
b. If oneperson is selected at random, what is theprobabilitythatperson is ei