Claim Most adults would not erase all of their personal information onlie if the
ID: 3360813 • Letter: C
Question
Claim Most adults would not erase all of their personal information onlie if they could A software firm survey of 500 randomly selected adults showed that 38% of them would erase all of their personal information online if they could Complete parts (a) and (b) below a. Express the original claim in symbolic form. Let the parameter represent the adults that would erase their personal information Type an integer or a decimal Do not round) b. Identify the null and alternative hypotheses Type integers or decimals. Do not round )Explanation / Answer
Given that,
sample size(n)=500
success rate ( p )= x/n = 0.38
success probability,( po )=0.5
failure probability,( qo) = 0.5
null, Ho:p=0.5
alternate, H1: p<0.5
level of significance, = 0.05
from standard normal table,left tailed z /2 =1.64
since our test is left-tailed
reject Ho, if zo < -1.64
we use test statistic z proportion = p-po/sqrt(poqo/n)
zo=0.38-0.5/(sqrt(0.25)/500)
zo =-5.3666
| zo | =5.3666
[ANSWERS]
H1: p<0.5
null, Ho: H1: p=0.5
alternative, Ho: H1: p<0.5