University:
California State University, Northridge
Course:
MATH 340 | Introduction to Probability and Statistics
Academic year:

2014
Views:

64

Pages:

7
Author:

webwebweber11xga

MATH 340, Midterm 2 Name: (print) _____&_o&di ___�_O_H_._J _______ This test includes 7 questions (total of 38 points + 2 points bonus), on 7 pages. The last page contains a table of the standard normal distribution. The duration of the test is 1 hr 15 min. Your scores: (do not enter answers here) 1 2 3 4 5 total 7 6 Important: The test is closed books/notes. A basic scientific calculator is allowed; no graphing calculators or other electronic devices. If a numerical answer is required, acceptable forms are a reduced fraction or a decimal with sufficient accuracy. Show all steps. 1. (6 points) An airline estimates that 4 percent of the passengers that make reservations on a particular flight do not show up. Consequently, their policy is to sell 100 reserved seats on a plane that has only 98 seats. Using binomial distribution, calculate the probability that every person who shows up for the flight will find a seat available. nu.U<.t!:.Rr X )( A,, l3ix D J,t,« (t:l�Su� 9? 111to-5fot...v 'J ( f1110 ,) tJ. tJ 1 /c::it�f�"':feyf. 'I) .,_ ,.,, pa.5,s-1-,...,.lfiU.v 't:.� a. [ /;it,ev;.7 ftl5U!t,,$Wv /,� V p( Y ?2-) = o/ �aL:} = / �/7� � f- d' �1'/ -rkw,1 -fwD P(x�o)- P(Y:cl) Cl.0/) (/ 0 /tN) 1 tJ. '1 6 • o_ p y f/40 fJ. f/9 9t · d.O'f (