le Edit View History Bookmarks People Window Help 8%D Sun 1:43 Take a Test-chris
ID: 3331137 • Letter: L
Question
le Edit View History Bookmarks People Window Help 8%D Sun 1:43 Take a Test-christina cognato Secure https://www.mathxl.com/Student/PlayerTest.aspx?testid-168814118¢erwin; yes MATH 1016-01 Fall 2017 Christina cognato 10/15/17 1:43 AM Test: Test 1: Ch 1-3 Time Remaining: 00:24:22 Submit Test This Question: 1 pt 12of 12(Bcomplete) This Test: 12 pts possible Ph The table below shows the results of a survey in which 143 men and 145 women workers ages 25 to 64 were asked if they have at least one month's income set aside for emergencies. Complete parts (a) through (d). ests Men Women Total Less than one month's income 66 84 150 One month's income or more 77 61 38 Total (a) Find the probability that a randomly selected worker has one month's income or more set aside for emergencies. The probability isRound to the nearest thousandth as needed) (b) Given that a randomly selected worker is a male, find the probability that the worker has less than one month's income. 143 145 288 00sThe probabliRound to the nearet housandth as needed) Librar (c) Given that a randomly selected worker has one month's income or more, find the probability that the worker is a female. The probability is (Round to the nearest thousandth as needed ) Click to select your answerls) ption! tor S ls Chapter 1 Pre-Test 0 of ooExplanation / Answer
Solution:
( a )
The probability that the randomly selected worker has saved one month income or more for emergencies
= 138 / 288 = 0.4791
( b )
The probability that the randomly selected worker has saved less than one month income and being a man
= 66 / 288 = 0.2291
( c )
The probability that the randomly selected worker has saved one month income or more , and being a female
= 61 / 288 = 0.2118
( d )
The events " having saved less than one month salary" and " being male " are two indipendant events
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.