Question

a television show conducted an experiment to study what happens when buttered toast is dropped on the floor. when 47 buttered slices of toast were dropped, 25 of them landed with the buttered side up and 22 landed with the buttered side down. use a 0.05 significance level to test the claim that toast will land with the buttered side down 50% of the time. use the p - value method. use the normal distribution as an approximation to the binomial distribution. after that, supposing the intent of the experiment was to assess the claim that toast will land with the buttered side down more than 50% of the time, write a conclusion that addresses the intent of the experiment.

z = - 0.44
(round to two decimal places as needed.)

identify the p - value.

p - value = 0.660
(round to three decimal places as needed.)

state the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim.

the null hypothesis. there sufficient evidence to the claim that buttered toast will land with the buttered side down 50% of the time

Explanation:

Step1: Compare P - value and significance level

Given significance level $\alpha = 0.05$ and P - value $=0.660$.
Since $P - value=0.660>0.05=\alpha$.

Step2: Make conclusion about null hypothesis

We fail to reject the null hypothesis.
The null hypothesis $H_0:p = 0.5$ (where $p$ is the proportion of toast landing buttered - side down).
Since we fail to reject $H_0$, there is not sufficient evidence to reject the claim that buttered toast will land with the buttered side down 50% of the time.

For the claim that toast will land with the buttered side down more than 50% of the time (alternative hypothesis $H_1:p>0.5$), because we failed to reject $H_0:p = 0.5$ (a two - tailed test was initially done, but for a right - tailed test with the same P - value and $\alpha = 0.05$, the conclusion is similar as the P - value is still greater than $\alpha$), there is not sufficient evidence to support the claim that buttered toast will land with the buttered side down more than 50% of the time.

Answer:

Fail to reject the null hypothesis. There is not sufficient evidence to reject the claim that buttered toast will land with the buttered side down 50% of the time. There is not sufficient evidence to support the claim that buttered toast will land with the buttered side down more than 50% of the time.