A recent study of high school students shows the percentage of females and males who have...

A recent study of high school students shows the percentage of females and males who have at LEAST one notation in their school record for inappropriate behavior. A simple random sample of high school students was interviewed. The students were asked whether they had a notation for inappropriate behavior in their school record. Of the 100 females, 21 answered yes, as did 145 of the 400 males.

Part A: Construct and interpret a 99% confidence interval for the difference in population proportions of females and males who have at LEAST one notation for inappropriate behavior. Be sure to state the parameter, check conditions, perform calculations, and make conclusion(s). (8 points)

Part B: Does your interval from part A give convincing evidence of a difference between the population proportions? Explain. (2 points) (10 points)

Expert Solution

please like if it helps me

Thank you so much

orchestra answered 1 year ago

In a recent survey of county high school students, 100 males and 100 females, 66 of...

In a recent survey of county high school students, 100 males and 100 females, 66 of the male students and 47 of the female students sampled admitted that they consumed alcohol on a regular basis. Find a 90% confidence interval for the difference between the proportion of male and female students that consume alcohol on a regular basis. Can you draw any conclusions from the confidence interval? For the test of significance questions, clearly indicate each of the formal steps...

In a certain high school, uniforms are optional. A study shows that high school students who...

In a certain high school, uniforms are optional. A study shows that high school students who wear uniforms have a lower grade average than students who don't wear uniforms. From this study, the school administration claims that they should not require the students to wear uniforms because that is the cause of the lowering grades. Another possible explanation is that students who wear uniforms are poorer than the students who don't wear uniforms and the economic situation of their parents...

A recent study shows that unemployment does not impact males and females in the same way...

A recent study shows that unemployment does not impact males and females in the same way (Newsweek, April 20, 2009). According to a Bureau of Labor Statistics report, 8.5% of those who are eligible to work are unemployed. The unemployment rate is 8.8% for eligible men and only 7.0% for eligible women. Suppose 52% of the eligible workforce in the U.S. consists of men. a. You have just heard that another worker in a large firm has been laid off....

A study wants to compare the percentage of Facebook users between males and females in a...

A study wants to compare the percentage of Facebook users between males and females in a county. A sample of 95 males shows that 46 of them use Facebook. A sample of 90 females shows that 48 of them use Facebook. (a) What are the populations? (b) At α = 0.01 level of significance, is there evidence that the two population proportions are different? (c) Identify the type of error for your conclusion. If it is type I error, find...

We are interested in comparing the percentage of females versus males who feel they are overweight....

We are interested in comparing the percentage of females versus males who feel they are overweight. The following data was collected: What is the 95% confidence interval for the difference in proportion between women and men? What is the test statistic? Male or Female Total Surveyed Number who feel they are overweight Female 146 32 Male 84 15

After the recent school shooting in Florida, high school students have led the protests demanding stricter...

After the recent school shooting in Florida, high school students have led the protests demanding stricter gun laws. After the Treyvon Martin shooting five years ago, young people started the Black Lives Matter movement. Based on emotional and social development in adolescence, why do you think these young people were the ones to work for change?

In a recent school year in the state of Washington, there were 319,000 high school students....

In a recent school year in the state of Washington, there were 319,000 high school students. Of these, 154,000 were girls and 165,000 were boys. Among the girls, 41,100 dropped out of school, and among the boys, 10,500 dropped out. A student is chosen at random. Round the answers to four decimal places. (a) What is the probability that the student is female? (b) What is the probability that the student dropped out? (c) What is the probability that the...

In a recent survey of high school students, it was found that the amount of time...

In a recent survey of high school students, it was found that the amount of time spent on reading books per week was normally distributed with a mean of 32 minutes. Assume the distribution of weekly reading time follows the normal distribution with a population standard deviation of 2 minutes. Suppose we select a sample of 20 high school students. a. What is the standard error of the mean time? Answer b. What percent of the sample means will be...

A recent study found that toddlers who have a diet high in processed foods may have...

A recent study found that toddlers who have a diet high in processed foods may have a slightly lower IQ later in life. The conclusion came from a long-term investigation of 14,000 people whose health was monitored at 3,4,7, and 8 years of age. e) One analysis found that of the 4000 children for which there were complete data, there was a significant difference in IQ between those who had had “processed” (i.e., junk) food and those who followed health-conscious...

A recent Pew Center Research survey revealed that 68% of high school students have used tobacco...

A recent Pew Center Research survey revealed that 68% of high school students have used tobacco related products. Suppose a statistician randomly selected 20 high school students. Use this information to answer questions 39-41. To find the probability that exactly 15 used tobacco products, would you use the Binomial, Geometric, or Poisson distribution to find the probability? Set up the problem to find P (X = 15) using the appropriate distribution. Do NOT solve. What is the expected number of...

Question