Suppose a sample of 1000 adults was asked? \"Do you buy clothes from your mobile
ID: 3055087 • Letter: S
Question
Suppose a sample of 1000 adults was asked? "Do you buy clothes from your mobile? device?" and the results are summarized in the table to the right. Complete parts? (a) through? (c) below.
Male Female Total
Yes 170 330 500
No 330 170 500
Total 500 500 1000
Calculate the test statistic.
X2 Stat= answer for this 101.12
What are the answers to? (a) and? (b) if 290 males say they buy clothing from their mobile device and 210 did? not?
Male Female Total
Yes 290 280 570
No 210 220 430
Total 500 500 1000
I .Calculate the test statistic.
X2 Stat=
II . Determine the NEW ? p-value in? (a) and interpret its meaning
III. Calculate the critical value
Suppose a sample of 1000 adults was asked? "Do you buy clothes from your mobile? device?" and the results are summarized in the table to the right. Complete parts? (a) through? (c) below.
Explanation / Answer
Expected frequency,
Er,c = (nr * nc) / n
E(yes,male) = (570*500)/1000 = 285
similarly, other values are calculated
?^2 = ? [ (Or,c - Er,c)^2 / Er,c ]
I.
Test statistic, X2 = 0.4078
II.
p-value = 0.523
As p-value is greater than significance level of 0.05, we fail to reject the null hypothesis.
This means there are not significant evidence to conclude that Male and Female do not differ in thier opinion on buying cloths from mobile phone.
III.
Critical value = 3.8415
Observed Male Female total Yes 290 280 570 No 210 220 430 Total 500 500 1000 Expected Male Female Yes 285.000 285.000 No 215.000 215.000Related Questions
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