If a 90% confidence interval for the difference of proportions contains some positive and some negative values, what can we conclude about the relationship between p1 and p2 at the 90% confidence level?
a. there is a negative difference between p1 and p2.
b. there is no difference between p1 and p2.
c. there is a positive difference between p1 and p2.
d. we cannot make a conclusion about the relationship between p1 and p2.

b. There is no difference between p1 and p2.

Step-by-step explanation:

Given that a 90% confidence interval for the difference of proportions contains some positive and some negative values

i.e. confidence interval lower bound is negative and upper bound is positive

This confirms that 0 is contained in the confidence interval for difference of proporitons at 90%

Hence for the hypotheses

we find that 0 is inside the confidence interval

This implies null hypothesis is accepted

Hence we conclude that there is no difference

b. There is no difference between p1 and p2.

the correct answer is a) they believe they have a "just cause."

islamic terrorists justify their violent actions because they believe they have a "just cause."

every act of terrorism of islamic sects is done “in the name of allah”. that justifies their actions. islam people who commit those terrorist attacks are not afraid to die. that is why the attacks have horrible consequences. they know they are going to die and they are proud to do it because it is in the name of allah, so it is justified and is for a “good cause.”

since the very beginning of the conflict with israel, islam is fighting a “sacred war”, respecting the words stated in the qur’an. they fight against the domination of the western countries and to defend their occupied territories.