Question

8. What is the critical value of 92% confidence level.

9. In January 2020 it was claimed that only 1% of people infected by COVID-19 die. Patti thinks this rate is much higher than 1% . To test her Hypothesis, she looked at the sample from a county found out 97 died out of 600.

Her hypothesis statement looks like: H0 : p = 0.01 and H A : pˆ > 0.167 what went wrong in her set of hypothesis?

Answer 1

Solution : -

( 8 )

At 92% confidence level

= 1 - 92%  

= 1 - 0.92 = 0.08

/2 = 0.04

Z/2 = Z0.04 = 1.751

The critical value Z = 1.751

( 9 )

The null and alternative hypothesis is ,

H0 :   = 0.01

Ha : > 0.01

This is the right tailed test .

Answer : - H A : pˆ > 0.167  wrong of hypothesis .