Help please: "A particular bus service is on time in 80% of journeys...."

garganta

New member
Joined
Feb 13, 2018
Messages
1
Over a long period of time, it is found that a particular bus service is on time in
80% of journeys. The bus company claims that it has made improvements to the
service and that the bus is now on time more often. I decide to test this at the 5%
significance level.
(i) Write down the null and alternative hypotheses that I should use.
In my next 10 journeys, the bus is on time every time.
(ii) Find the p-value for this hypothesis test.
(iii)What is my conclusion?
(iv) Explain why this hypothesis test is unfair on the bus company, and state how
many journeys I need to make so that it is possible that the null hypothesis
could be rejected using the same significance level
 
Over a long period of time, it is found that a particular bus service is on time in
80% of journeys. The bus company claims that it has made improvements to the
service and that the bus is now on time more often. I decide to test this at the 5%
significance level.
(i) Write down the null and alternative hypotheses that I should use.
In my next 10 journeys, the bus is on time every time.
(ii) Find the p-value for this hypothesis test.
(iii)What is my conclusion?
(iv) Explain why this hypothesis test is unfair on the bus company, and state how
many journeys I need to make so that it is possible that the null hypothesis
could be rejected using the same significance level

Well, it appears you should write your Null and Alternative hypotheses. Go!

Remember that the Null Hypothesis tends to be status quo.
 
Top