In 1995, it was determined that 78% of US citizens supported a ban on householdaerosols.Thinking that this proportion may have changed over the past few decades, a sample will be taken to test if a change has occurred.

a)What is the population?______________________________

What is the variable of interest?_______________

and is this variableQuantitativeorQualitative?

Circle best answer

In other words:what is the one piece of info we care about for each individual in the population?Is it a quantitative measurement?Or do we determine if each individual belongs to a certain category (referred to assuccess) or not (failure)?

If it is a quantitative measurement, then the population is filled with numbers.Otherwise, the population is filled with words.

b)What are the appropriate null and alternative hypotheses?

H₀:

H_a:

c)In a SRS of 400 citizens taken this year, 332 supported the ban.

Determine the value of the appropriate test statistic to perform this test.

d)Determine the value of the p-value for this test.

e)Statistical conclusion:AcceptorReject(circle one)the null hypothesis

AND WHY?_______________________________

f)Real Life Conclusion:Do you have enough evidence in the data to conclude that the proportion is no longer 78%?

YesorNo(circle one)