Question

In clinical studies of an allergy drug, 81 of the 900 subjects experienced drowsiness. A competitor claims that 10% of the users of this drug experience drowsiness. At the 5% significance level, what is the test statistic? What is the conclusion?

Answer 1

n = 900

x = 81

Claim:The 10% of the users of this drug experience drowsiness

Null and alternative hypothesis is

Level of significance = 0.05

Test statistic is

test statistic =

P-value = 0.3173 ( Using z table)

P-value , Failed to Reject Ho

conclusion : There is sufficient evidence to support the claim that the 10% of the users of this drug experience drowsiness