Solve these questions

Q1. Construct a confidence interval for p1−p2 at the given level of confidence.    x1=391
, n1=534
, x2=437
, n2=593, 99
% confidence

a) The 90% of confidence interval P1-P2 is -------, ---------

b) P-Value -----

Q2.  

Assuming that both populations are normally
distributed, construct a 95
%
confidence interval about μ1−μ2.  (
μ1, represents the mean of the experimental group and μ2,  represents the mean of the control
group.)

Experimental:

n1=30, 

x1 =45.3,  s1 =6.2.1, 

Control:

x2= 49.3, n2= 20

S2=10.8

(i) The confidence interval of a lower bound is --------, upper bound is ---------

(ii) P-Value ----