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StClowers
Group Title
An online site presented this question, “Would the recent norovirus outbreak deter you from taking a cruise?” Among the 34,696 people who responded, 66% answered “yes”. Use the sample data to construct a 95% confidence interval estimate for the proportion of the population of all people who would respond “yes” to that question.
__ < p < __ (round to three decimal places as needed)
Does the confidence interval provide a good estimate of the population proportions?
(a) No, the sample is a voluntary sample and might not be representative of the population.
(b) No, the responses are not independent.
(c) Yes, the sample is large enough to provide a good estimate of the population proportion.
(d) Yes, all the assumptions for a confidence interval are satisfied.
 5 months ago
 5 months ago
StClowers Group Title
An online site presented this question, “Would the recent norovirus outbreak deter you from taking a cruise?” Among the 34,696 people who responded, 66% answered “yes”. Use the sample data to construct a 95% confidence interval estimate for the proportion of the population of all people who would respond “yes” to that question. __ < p < __ (round to three decimal places as needed) Does the confidence interval provide a good estimate of the population proportions? (a) No, the sample is a voluntary sample and might not be representative of the population. (b) No, the responses are not independent. (c) Yes, the sample is large enough to provide a good estimate of the population proportion. (d) Yes, all the assumptions for a confidence interval are satisfied.
 5 months ago
 5 months ago

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StClowers Group TitleBest ResponseYou've already chosen the best response.0
Please help me enter this into the Ti84 calc THANKS!!
 5 months ago

violy Group TitleBest ResponseYou've already chosen the best response.0
We will use the 1PrpZInt function. We will press the STAT, right arrow key twice. Then, we press ALPHA MATH.
 5 months ago

violy Group TitleBest ResponseYou've already chosen the best response.0
We will input the appropriate values for x, n and Clevel. Then, we will Calculate.
 5 months ago

violy Group TitleBest ResponseYou've already chosen the best response.0
By the way, take note that p hat = x/n.
 5 months ago

StClowers Group TitleBest ResponseYou've already chosen the best response.0
ok, which values are which though...thats the confusing part.
 5 months ago

violy Group TitleBest ResponseYou've already chosen the best response.0
For the p hat, we will take note of the sample proportion given for the people who said yes. can you identify that? For the n, it is the sample size or the number of people who responded.
 5 months ago

StClowers Group TitleBest ResponseYou've already chosen the best response.0
yes ok...one sec
 5 months ago

StClowers Group TitleBest ResponseYou've already chosen the best response.0
it gave me an error...
 5 months ago

StClowers Group TitleBest ResponseYou've already chosen the best response.0
do i put in the 34696 just like that?
 5 months ago

StClowers Group TitleBest ResponseYou've already chosen the best response.0
I put x = .66 and n = 34696 then .95 for the clevel and it gave me an error.. :(
 5 months ago

StClowers Group TitleBest ResponseYou've already chosen the best response.0
ok so i tried it again and entered just 66 as the x and it gave me (.00144, .00236)..isthat right @violy ?
 5 months ago

violy Group TitleBest ResponseYou've already chosen the best response.0
Kindly recheck the value of the x.
 5 months ago

violy Group TitleBest ResponseYou've already chosen the best response.0
The 0.66 is for the p hat. If we use the formula p hat =x/n what will we get for the x?
 5 months ago

violy Group TitleBest ResponseYou've already chosen the best response.0
0.66=x/34696. Solve for x.
 5 months ago

StClowers Group TitleBest ResponseYou've already chosen the best response.0
Im so clueless, I guess Im not understanding where to get x
 5 months ago

violy Group TitleBest ResponseYou've already chosen the best response.0
We have the 34696 being divided on right side, we will use the opposite operation of division, which is?
 5 months ago

StClowers Group TitleBest ResponseYou've already chosen the best response.0
multiply
 5 months ago

violy Group TitleBest ResponseYou've already chosen the best response.0
That is correct, so we multiply each side by 34696. Can you try it?
 5 months ago

StClowers Group TitleBest ResponseYou've already chosen the best response.0
the left side is 22899.36 and the right side is 1203812416
 5 months ago

violy Group TitleBest ResponseYou've already chosen the best response.0
We will round that.
 5 months ago

StClowers Group TitleBest ResponseYou've already chosen the best response.0
ok.....in the question it asks to round to three decimal places as needed...
 5 months ago
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