Let p denotes the true proportion of high school students who tried marjiuana.
To test against
Here
sample proportion
and sample size n = 2266
The test statistic can be written as
which under H0 follows a standard normal distribution.
Now,
The value of the test statistic (ans)
Large Sample Proportion Problem. A survey was conducted on high school marijuana use. Of the 2266...
Question 23 3 pts Large Sample Proportion Problem. Asurvey was conducted on high school marijuana use. Of the 2266 high school students surveyed, 970 admitted to smoking marijuana at least once. A study done 10 years earlier estimated that 45% of the students had tried marijuana. We want to conduct a hypothesis test to see if the true proportion of high school students who tried marijuana is now less than 45%. Use alpha = .01. What is the standard error...
Large Sample Proportion Problem. A survey was conducted on high school marijuana use. Of the 2266 high school students surveyed, 970 admitted to smoking marijuana at least once. A study done 10 years earlier estimated that 45% of the students had tried marijuana. We want to conduct a hypothesis test to see if the true proportion of high school students who tried marijuana is now less than 45%. Use alpha = .01. What is the critical value for this test?...
Large Sample Proportion Problem. A survey was conducted on high school marijuana use. Of the 2266 high school students surveyed, 970 admitted to smoking marijuana at least once. The standard error for a confidence interval for this proportion would be: o It depends upon the Alternative Hypothesis O 1.4281*5719)/SQRT(2266) O 1.4281*.5719)/2266 O SQRT(.4281*.5719)/2266)
Question 20 3 pts Large Sample Proportion Problem. A survey was conducted on high school marijuana use. Of the 2266 high school students surveyed, 970 admitted to smoking marijuana at least once. A study done 10 years earlier estimated that 45% of the students had tried marijuana. We want to conduct a hypothesis test to see if the true proportion of high school students who tried marijuana is now less than 45%. Use alpha = .01. What is the critical...
Question 21 3 pts Large Sample Proportion Problem. A survey was conducted on high school marijuana use. Of the 2266 high school students surveyed, 970 admitted to smoking marijuana at least once. A study done 10 years earlier estimated that 45% of the students had tried marijuana. We want to conduct a hypothesis test to see if the true proportion of high school students who tried marijuana is now less than 45%. Use alpha = .01. What is the critical...
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A survey was conducted of male high school students to determine the proportion of male students planning to attend college or university. A survey was also conducted of female high school students to determine the proportion of female students planning to attend college or university. In the survey of male high school students, a group of 10,000 students were polled, and 71% indicated they were planning to attend college or university. In the survey of female high school students, a...
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