Answer to Question #320048 in Statistics and Probability for Ralph

Question

D. Not to

lat the

e is

nsare.

when, in fact, it is

6. A statistics senior high teacher believes that fewer than 20% of QNHS students answered the

online examination through google forms. He surveys 84 of his students and finds that 11 answered

the online exam. An appropriate alternative hypothesis is:

A. p = 0.20

B. p > 0.20

C. p<0.20

D. p < 0.20

Answer 1

To answer this question we should find out the sample proportion. $p={\frac {11} {84}}\approx0.13$ or 13%. As we can see, it is much smaller than assumed 20%, so it is appropriate to put forward the hypothesis that p < 0.2