In 2001, the polls found that 81% of American adults believed that there was a conspiracy in the death of President Kennedy. Assume a recent poll asked 1160 American adults if they believe there was a conspiracy in the assassination and it found that 897 believe there was a conspiracy. Does the data show that the proportion of Americans who believe in this conspiracy is now lower? Test at the 9% level. Check those assumptions: 1. npnp = which is 2. n(1−p)n(1-p) = which is 3. NN = which is The formula set up of the test statistic is as follows.: (Leave any values that were given as fractions as fractions) z=pˆ−p√p(1−p)n=z=p̂-pp(1-p)n=
In 2001, the polls found that 81% of American adults believed that there was a conspiracy in the death of President Kennedy. Assume a recent poll asked 1160 American adults if they believe there was a conspiracy in the assassination and it found that 897 believe there was a conspiracy. Does the data show that the proportion of Americans who believe in this conspiracy is now lower? Test at the 9% level.
Check those assumptions:
1. npnp = which is
2. n(1−p)n(1-p) = which is
3. NN = which is
The formula set up of the test statistic is as follows.:
(Leave any values that were given as fractions as fractions)
z=pˆ−p√p(1−p)n=z=p̂-pp(1-p)n=
Final answer for the test statistic from technology.
Round to 2 decimal places:
z =
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
