Calculate the p-value for the following conditions and determine whether or not to reject the null hypothesis. a) one-tail (upper) test, z Subscript pequals2.12 , and alphaequals0.10 b) one-tail (lower) test, z Subscript pequalsnegative 1.32 , and alphaequals0.05 c) two-tail test, z Subscript pequalsnegative 1.56 , and alphaequals0.05 d) two-tail test, z Subscript pequals2.37 , and alphaequals0.02

a) reject the null hypothesis

b) not reject the null hypothesis

c) not reject the null hypothesis

d) reject the null hypothesis

Step-by-step explanation:

a) one-tail (upper) test, z Subscript p equals 2.12 , and alpha equals 0.10

Since p (z) = 0.017 < 0.10, the result is significant.

b) one-tail (lower) test, z Subscript p equals negative 1.32 , and alpha equals 0.05

Since p (z) = 0.093> 0.05 the result is not significant.

c) two-tail test, z Subscript p equals negative 1.56 , and alpha equals 0.05

Since p (z) = 0.119>0.05 the result is not significant.

d) two-tail test, z Subscript p equals 2.37 , and alpha equals 0.02

Since p (z) = 0.018<0.02 the result is significant.