Question

In: Statistics and Probability

2. A recent poll revealed that 54 out of 96 people believed honeydew should be removed...

2. A recent poll revealed that 54 out of 96 people believed honeydew should be removed from all versions of fruit salad. Create a 92% confidence interval and discuss whether or not this data reflects the belief most people would wish to remove honeydew from fruit salad. Make sure to use your confidence interval in your explanation.

4. A recent poll found 48 out of 92 professors would be willing to add 30 minutes to every class schedule to lower their amount of office hours. Of the students who were polled, only 30 of the 63 of them believed adding time to the class schedule in lieu of office hours was a good idea. Create a 95% confidence interval to see if the perspective of the professors is different from the students.

Solutions

Expert Solution

So clearly the 95% confidence interval of P1-P2 includes the point "0" . This implies that P1 - P2 can be zero. So there is not enough evidence that there is difference between P1 and P2 .

orchestra answered 1 year ago
Next > < Previous

Related Solutions

In a recent poll of 1000 People from California , 37.3% use Twitter.  It is believed that...
In a recent poll of 1000 People from California , 37.3% use Twitter.  It is believed that the true proportion of all Nova Scotians using Twitter is 35%.   What is the probability that the sample proportion of People from California “Tweeting” in a random sample of 1000 would be within 5% of the population proportion. What is the probability that in a random sample of 1000 People from California, 37.3% or more “Tweet”? Given that the statistic in b) was actually...
In 2013, the Gallup Poll asked 1015 American adults whether they believed that people should pay...
In 2013, the Gallup Poll asked 1015 American adults whether they believed that people should pay sales tax on items purchased over the internet. Of these, 437 said they supported such a tax. Does the survey provide enough evidence that less than 45% of American adults favor an internet sales tax? Use α = 0.05 level of significance? b) Step 2: Find the test statistic. c) Step 3: P-value OR Critical value(s): Label answer as “P-value” or “CV” and draw...
Hw 28 #2 A recent poll of 2500 randomly selected 18-25-year-olds revealed that 290 currently use...
Hw 28 #2 A recent poll of 2500 randomly selected 18-25-year-olds revealed that 290 currently use marijuana or hashish. According to a publication, 12.5 % of 18-25-year-olds were current users of marijuana or hashish in 1997. Do the data provide sufficient evidence to conclude that the percentage of 18-25-year-olds who currently use marijuana or hashish has changed from the 1997 percentage of 12.5 %? Use α=0.01 significance level. test statistic z= positive critical z score= negative critical z score= The...
1 7.94 111 2 54 2 8.292 119 2 63 3 4.643 96 2 36 4...
1 7.94 111 2 54 2 8.292 119 2 63 3 4.643 96 2 36 4 7.47 115 2 50 5 8.882 117 1 46 6 7.585 101 2 67 7 7.65 129 2 47 8 2.412 82 2 43 9 6 108 1 54 10 8.833 112 2 67 11 7.47 120 1 41 12 5.528 93 1 35 13 7.167 110 2 50 14 7.571 100 1 80 15 4.7 101 1 38 16 8.167 114 1 45...
1 7.94 111 2 54 2 8.292 119 2 63 3 4.643 96 2 36 4...
1 7.94 111 2 54 2 8.292 119 2 63 3 4.643 96 2 36 4 7.47 115 2 50 5 8.882 117 1 46 6 7.585 101 2 67 7 7.65 129 2 47 8 2.412 82 2 43 9 6 108 1 54 10 8.833 112 2 67 11 7.47 120 1 41 12 5.528 93 1 35 13 7.167 110 2 50 14 7.571 100 1 80 15 4.7 101 1 38 16 8.167 114 1 45...
In a recent poll, 38% of people said that chocolate was their favorite flavor of ice...
In a recent poll, 38% of people said that chocolate was their favorite flavor of ice cream. Suppose that 20      adults are randomly selected.                                                                                                                                              Let X equal the number of people that answer chocolate is their favorite flavor of ice cream in the sample of 20. What is the probability distribution of X? (Be sure to list the specific distribution) (binomial, geometric, Poisson, exponential, uniform)    How many adults would you expect to say that chocolate is...
A survey revealed that 128 people out of 400 interviewed in a city where the product...
A survey revealed that 128 people out of 400 interviewed in a city where the product was widely advertised used a household product, but 115 out of 390 used it in a city where there was no advertising. Determine whether or not advertising is effective at the .05 level.
In a recent poll, 120 people were asked if they liked dogs, and 60% said they...
In a recent poll, 120 people were asked if they liked dogs, and 60% said they did. Find the margin of error of this poll, at the 90% confidence level. Give your answer to three decimals
In a recent poll, 250 people were asked if they liked dogs, and 47% said they...
In a recent poll, 250 people were asked if they liked dogs, and 47% said they did. Find the margin of error of this poll, at the 90% confidence level. Give your answer to three decimals
In a recent poll, 160 people were asked if they liked dogs, and 55% said they...
In a recent poll, 160 people were asked if they liked dogs, and 55% said they did. Find the margin of error of this poll, at the 99% confidence level. Give your answer to three decimals If n=28, ¯xx¯(x-bar)=33, and s=7, find the margin of error at a 80% confidence level Give your answer to two decimal places.
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT