Question

The test statistic of z=1.21 is obtained when testing the claim that p?0.653. a. Identify the hypothesis test as being? two-tailed, left-tailed, or? right-tailed. b. Find the? P-value. c. Using a significance level of ?=0.01?, should we reject Upper H 0H0 or should we fail to reject Upper H 0?

Answer 1

Solution :

Given that,

z = 1.21

a) p 0.653

This is the two tailed test .

b) Using standard normal table,

P(z > 1.21) = 1 - P(z < 1.21) = 1- 0.8869 = 0.1131

P-value = 2 *  P(z > 1.21) = 2 * 0.1131 = 0.2262

c) = 0.01

Here P-value >

So we fail to reject H₀ .