SOLUTION: Two samples are taken with the following numbers of successes and sample sizes r1=26 r2=28 n1=92 n2=63 Find a 98% confidence interval, round answers to the nearest thousandth
Algebra.Com
Question 1107255: Two samples are taken with the following numbers of successes and sample sizes r1=26 r2=28 n1=92 n2=63 Find a 98% confidence interval, round answers to the nearest thousandth
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
proportion 1 is 26/92=0.2826
proportion 2 is 28/63=0.4444
Their difference is -0.1618
the CI is 0.1618+/- z(0.99)sqrt (p1(1-p1))/n1+(p2(1-p2))/n2))
=-0.1618 +/- 2.326*sqrt (0.006122)
=-0.1618+/-0.1820 or (-0.344, 0.020)
RELATED QUESTIONS
Two samples are taken with the following numbers of successes and sample sizes
r1 = 29
(answered by Boreal)
Two samples are taken with the following numbers of successes and sample sizes
r1
= 30 (answered by ikleyn)
Two samples are taken with the following numbers of successes and sample sizes
r
1
=... (answered by ikleyn)
M10 #13
Two samples are taken with the following sample means, sizes, and standard... (answered by Boreal)
15) A test for equality of two variances has sample sizes n1 = 13 and n2 = 10. The... (answered by stanbon)
Two samples, sizes 40 and 70 respectively, are taken from a population with unknown
mean (answered by CPhill)
Consider the following hypothesis test.
H0: µ1 - µ2 = 0
Ha: µ1 - µ2 ≠ 0
The... (answered by Boreal)
Two random samples are taken, one from among first-year students and the other from among (answered by Boreal)
Populations 1 and 2 are considered. The null and alternative hypothesis are:
H0:m1=m2
(answered by stanbon)