Question

In: Statistics and Probability

The authors of a paper concluded that more boys than girls listen to music at high...

The authors of a paper concluded that more boys than girls listen to music at high volumes. This conclusion was based on data from independent random samples of 770 boys and 749 girls from a country, age 12 to 19. Of the boys, 397 reported that they almost always listen to music at a high volume setting. Of the girls, 331 reported listening to music at a high volume setting. Do the sample data support the authors' conclusion that the proportion of the country's boys who listen to music at high volume is greater than this proportion for the country's girls? Test the relevant hypotheses using a 0.01 significance level. (Use a statistical computer package to calculate the P-value. Use pboys − pgirls. Round your test statistic to two decimal places and your P-value to four decimal places.) z = P-value =

Solutions

Expert Solution


Related Solutions

The authors of a paper concluded that more boys than girls listen to music at high...
The authors of a paper concluded that more boys than girls listen to music at high volumes. This conclusion was based on data from independent random samples of 767 boys and 750 girls from a country, age 12 to 19. Of the boys, 397 reported that they almost always listen to music at a high volume setting. Of the girls, 331 reported listening to music at a high volume setting. Do the sample data support the authors' conclusion that the...
The authors of a paper concluded that more boys than girls listen to music at high...
The authors of a paper concluded that more boys than girls listen to music at high volumes. This conclusion was based on data from independent random samples of 770 boys and 748 girls from a country, age 12 to 19. Of the boys, 397 reported that they almost always listen to music at a high volume setting. Of the girls, 331 reported listening to music at a high volume setting. Do the sample data support the authors' conclusion that the...
For decades, people have believed that boys are innately more capable than girls in math. In...
For decades, people have believed that boys are innately more capable than girls in math. In other words, due to the intrinsic differences in brains, boys are better suited for doing math than girls. Recent research challenges this stereotype, arguing that gender differences in math performance have more to do with culture than innate aptitude. In the U.S., for example, girls perform just as well on standardized math tests as boys. Others argue, however, that while the average may be...
Two boys and three girls enter a music hall and take five seats at random in...
Two boys and three girls enter a music hall and take five seats at random in a row. 1) How many different ways can they sit in a row? 2)What is the probability the girls will take the end two seats? 3) What is the probability that the boys will sit together and the boys will sit together? 4)How many different ways can they sit alternately, like BGBGB or GBGBG 5) How many different ways can they sit if the...
You wish to see if boys have a higher average math SOL score than girls. A...
You wish to see if boys have a higher average math SOL score than girls. A random sample of 217 boys showed an average math SOL score of 478.26 with a standard deviation of 22.95. A random sample of 260 girls showed an average math score of 474.23 and a standard deviation of 22.18. Does this show, at significance level .05, that boys have a higher average math SOL score than girls? A: Are the assumptions met? B:What are the...
One of your peers claims that boys do better in math classes than girls. Together you...
One of your peers claims that boys do better in math classes than girls. Together you run two independent simple random samples and calculate the given summary statistics of the boys and the girls for comparable math classes. In Calculus, 15 boys had a mean percentage of 82.3 with standard deviation of 5.6 while 12 girls had a mean percentage of 81.2 with standard deviation of 6.7. What assumptions need to be made in order to determine the 90% confidence...
30 school age girls and 30 school age boys were surveyed to see who spend more...
30 school age girls and 30 school age boys were surveyed to see who spend more time playing video games. Among girls, the mean hours spent on video games per week is 15.6 and among boys the mean was 43.4. The standard deviation is 10.17 for girls and 39.64 for the boys. Can you conclude that the mean length in time school age girls play video games less than the mean lenght in time of school age boys? Use a...
11. What are some of the reasons that more boys are treated for psychological problems than...
11. What are some of the reasons that more boys are treated for psychological problems than are girls, but more women are treated in therapy than are men? 12. Discuss the primary stages of adult development and the major life-cycle transitions associated with moving from one stage to another.
An investigator wonders if slow-tempo music is more complex than fast-tempo music – since with slower...
An investigator wonders if slow-tempo music is more complex than fast-tempo music – since with slower music, the listener has more time to process the incoming musical information. To study this, he examines three samples of pop songs by the Beatles that differ in tempo: slow (group 1), moderate (group 2), and fast (group 3). 20 Beatles songs are sampled in each category (so, 60 songs total). As a measure of musical complexity, the investigator counts the number of different...
Many authors find that wages are more flexible in the US than in Europe: explain why...
Many authors find that wages are more flexible in the US than in Europe: explain why this might be the case.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT