In a survey of consumers aged 12 and? older, respondents were asked how many cel
ID: 2907947 • Letter: I
Question
In a survey of consumers aged 12 and? older, respondents were asked how many cell phones were in use by the household.? (No two respondents were from the same? household.) Among the? respondents,
215215
answered? "none,"
293293
said? "one,"
364364
said? "two,"
137137
said? "three," and
105105
responded with four or more. A survey respondent is selected at random. Find the probability that? his/her household has four or more cell phones in use. Is it unlikely for a household to have four or more cell phones in? use? Consider an event to be unlikely if its probability is less than or equal to 0.05.
?P(four or more cell
?phones)equals=nothing
?(Round to three decimal places as? needed.)
Is it unlikely for a household to have four or more cell phones in? use?
A.
NoNo?,
because the probability of a respondent with four or more cell phones in use is
greater thangreater than
0.05.
B.
NoNo?,
because the probability of a respondent with four or more cell phones in use is
less than or equal toless than or equal to
0.05.
C.
YesYes?,
because the probability of a respondent with four or more cell phones in use is
less than or equal toless than or equal to
0.05.
D.
YesYes?,
because the probability of a respondent with four or more cell phones in use is
greater thangreater than
0.05.
This Test: 25 pls possibk his 1 pt 8 of 25 (6 complete) weie in use by the household (No two respondents were from the same household) Among the respondents, 215 answered "none,-293 n a survey of consumers aged 12 and older, respondents wore asked how many cell phones aid one, 364 sald wo," 137 said "three" and 105 responded with four or more A survey respondent is selected at random Find the probability hat hisher ousehold to have four or more cul phones in use? Corsi anevent to be ur key í its probablly bless than or equal to 0 05 household has four or more cell phones in use. Is unkily or a (lour or more cell phones) Round to three decimal places as needed) s t unlkely for a household to have fouw or more cell phones in use? OA. No, because the probability of a respondent with four or more cell phones in use is greater than 0.05 O B. No, because the probability of a respondent with four or more cell phones in use is less than or equal to 0 05 O C. Yes, because the probubility of a respondent with four or more coll phones i use is les than or equal to 0 05 O D. Yes, because the probability of a respondent with four or more coll phones in use is greater than 0 05 lick to select your answerts)Explanation / Answer
Number of respondents have more than 4 or more cellphones = 105
Total survey sample size = 215 + 293 + 364 + 137 + 105 = 1114
Pr(More than 4 or more cell phones) = 105/1114 = 0.0943
No, it is not unlikely as the probability is greater than 0.05.
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