Question

In a recent survey of 200 elementary students, many revealed they preferred math than English. Suppose...

In a recent survey of 200 elementary students, many revealed they preferred math than English. Suppose that 80 of the students surveyed were girls and that 120 of them were boys. In the survey, 60 of the girls, and 80 of the boys said that they preferred math more.

3) Calculate an 80% confidence interval for the difference in proportions

4) Suppose the 90% confidence interval for the difference in proportion is (-0.0232, 0.1899).

Is the following interpretation of the confidence interval true?

"For all elementary students, I have 90% confidence that the true proportion difference between girls and boys is in the interval (-0.0232, 0.1899)."

TRUE /FALSE

5) Based on question 4, can we make the conclusion that for elementary students, girls are liking math more than boys? TRUE/ FAlSE

6) Based on question 3, can we make the conclusion that for elementary students, girls are liking math more than boys? TRUE / FALSE

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
In a recent survey of 200 elementary students, many revealed they preferred math than English. Suppose...
In a recent survey of 200 elementary students, many revealed they preferred math than English. Suppose that 80 of the students surveyed were girls and that 120 of them were boys. In the survey, 60 of the girls, and 80 of the boys said that they preferred math more. 1) What is the difference in the probability between that girls prefer math more and boys prefer math more? 2) What is the standard error of the difference in the probability...
Suppose the confidence interval (0.6358, 0.7532) represents the proportion of Skyline College students who say math...
Suppose the confidence interval (0.6358, 0.7532) represents the proportion of Skyline College students who say math is their favorite subject. a. Based on the confidence interval, is it likely 60% of Skyline College students say math is their favorite subject? Yes, all the interval values are greater than 0.60 No, 0.60 is not contained in the interval Yes, 0.60 is not contained in the interval b. Based on the confidence interval, does it appear that more than 60% of Skyline...
Suppose the confidence interval (0.6358, 0.7532) represents the proportion of Skyline College students who say math...
Suppose the confidence interval (0.6358, 0.7532) represents the proportion of Skyline College students who say math is their favorite subject. 1. Based on the confidence interval, is it likely 60% of Skyline College students say math is their favorite subject? A. No, 0.60 is not contained in the interval B. Yes, 0.60 is not contained in the interval C. Yes, all the interval values are greater than 0.60 2. Based on the confidence interval, does it appear that more than...
HW 19 A student conducts a survey of students regarding how many units they plan to...
HW 19 A student conducts a survey of students regarding how many units they plan to take in the fall semester. She collects data, and finds that 26 out of 80 plan to take 15 units or more. Find the 99% confidence interval for the proportion of students who plan to take 15 or more units in the fall semester. *What is the sample proportion?                            [ Select ]             ...
A survey of 200 students is selected randomly on a large university campus. They are asked...
A survey of 200 students is selected randomly on a large university campus. They are asked if they use a laptop in class to take notes. Suppose that based on the​ survey, 120 of the 200 students responded​ "yes." ​a) What is the value of the sample proportion ModifyingAbove p with caret​? ​b) What is the standard error of the sample​ proportion? ​c) Construct an approximate 95​% confidence interval for the true proportion p by taking plus or minus 2...
According to a recent survey, 85% of stocks in the U.S. market are held by institutional...
According to a recent survey, 85% of stocks in the U.S. market are held by institutional investors. a. Suppose that the survey had a sample size of n=1000. Construct a 95% confidence interval for the proportion of all U.S. stocks held by institutional investors. b. Based on (a), can claim that more than 80% of U.S. stocks are held by institutional investors? c. Discuss the effect of sample size on confidence interval
A new survey found that out of a random sample of 300 high school students throughout...
A new survey found that out of a random sample of 300 high school students throughout the country who had previously signed up to take the AP Statistics exam, 83% of them still planned on taking the adjusted version. Construct and interpret a 95% confidence interval for the true proportion of all students who still plan on taking their AP Stats exam. Explain what 95% confidence means in the context of this question. The AP exam believes that more than...
Language Survey About 42.3% of Californians speak a language other than English at home. Using your...
Language Survey About 42.3% of Californians speak a language other than English at home. Using your class as the sample, conduct a hypothesis test to determine if the percent of students at De Anza College that speak a language other than English at home is different from 42.3%. DATA TO USE: 21 out of 34 students in the sample speak a language other than English at home A) p-value = ______________ In 1 – 2 complete sentences, explain what the...
1. a survey of 2000 randomly selected musician found that 304 of them are left-handed. The...
1. a survey of 2000 randomly selected musician found that 304 of them are left-handed. The 92% confidence interval for the true proportion of all musicians that are left-handed is (0.139, 0.165). What is the best conclusion to draw from this interval? There is a 90% chance that between 13.9% and 16.5% of any sample of musicians will be left-handed We can be 90% confident that the constructed confidence interval captures the unknown population proportion of musicians that are left-handed...
In a recent survey conducted by a professor of UM, 200 students were asked whether or...
In a recent survey conducted by a professor of UM, 200 students were asked whether or not they have a satisfying experience with the e-learning approach adopted by the school in the current semester. Among the 200 students interviewed, 121 said they have a satisfying experience. What is the 99% confidence interval for the proportion of all UM students who have a satisfying experience with the e-learning approach? Select one: a. 0.548 to 0.662 b. 0.524 to 0.686 c. 0.537...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT