A computed 99% confidence interval for the true difference between two populatio
ID: 3221529 • Letter: A
Question
A computed 99% confidence interval for the true difference between two population proportions is -0.025 to +0.109. Then at 99% confidence level,
we can conclude that there is a significant difference between the two population proportions.
Based on this result, we can not make a meaningful statement about the difference between the two population proportions.
we can conclude that the first population proportion is more than the second population proportion.
we can not conclude that there is a significant difference between the two population proportions.
a.we can conclude that there is a significant difference between the two population proportions.
b.Based on this result, we can not make a meaningful statement about the difference between the two population proportions.
c.we can conclude that the first population proportion is more than the second population proportion.
d.we can not conclude that there is a significant difference between the two population proportions.
Explanation / Answer
we are given that the confidence interval ranges from negative 0.025 to positive 0.109
we can conclude that there is a significant difference between the two population proportions. ### we cant conclude this becuase it includes zero too in the range , so there is a chance that the true difference is zero
Based on this result, we can not make a meaningful statement about the difference between the two population proportions.## we can make a meaningful statement saying that the mean difference would lie in the range -0.025 and 0.109
we can conclude that the first population proportion is more than the second population proportion.### we cannot conclude this because when the value is negative then second poportion is more than first. if the value is positive then the first proportion is more than the second
we can not conclude that there is a significant difference between the two population proportions. ## this statement appears to be true , as we cannot make a statistically significant statement here.
a.we can conclude that there is a significant difference between the two population proportions. ### we cant conclude this becuase it includes zero too in the range , so there is a chance that the true difference is zero
b.Based on this result, we can not make a meaningful statement about the difference between the two population proportions.## we can make a meaningful statement saying that the mean difference would lie in the range -0.025 and 0.109
c.we can conclude that the first population proportion is more than the second population proportion.### we cannot conclude this because when the value is negative then second poportion is more than first. if the value is positive then the first proportion is more than the second
d.we can not conclude that there is a significant difference between the two population proportions. ## this statement appears to be true , as we cannot make a statistically significant statement here.
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