Of 1000 randomly selected cases of lung cancer, 823 resulted in death. Is there sufficient evidence...

Of 1000 randomly selected cases of lung cancer, 823 resulted in death. Is there sufficient evidence to say the true proportion of lung cancer deaths is different than 85% at a significance level of 5%.

Are the normality assumptions satisfied? Explain why.
State hypotheses.
Calculate the test statistic
What is/are the critical value(s)?
What is your decision?
What is the conclusion/interpretation of this decision?

Solutions

Expert Solution

Let p denotes the true proportion of cases of lung cancer which resulted in death.

There is sufficient evidence to say the true proportion of lung cancer deaths is different than 85% at a significance level of 5%.

orchestra answered 1 year ago

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