A study reported that 28 percent of middle school students in a certain state participate in...

A study reported that 28 percent of middle school students in a certain state participate in community service activities. A teacher believes that the rate is greater than 28 percent for the middle school students in the teacher’s district. The teacher selected a random sample of middle school students from the district, and the percent of students in the sample who participated in community service activities was found to be 32 percent. Which of the following is the most appropriate method for investigating the teacher’s belief?

A two-sample z-test for a difference in population proportions A

A two-sample z-test for a difference in sample proportions B

A one-sample z-test for a sample proportion C

A one-sample z-test for a population proportion D

A one-sample z -test for a difference in population proportions E

Solutions

Expert Solution

orchestra answered 1 year ago

Next > < Previous

Related Solutions

Students in a school were asked to participate in a study of the effects of a...

Students in a school were asked to participate in a study of the effects of a new teaching method on reading skills of 10th graders. To determine the effectiveness of the new method, a reading test was given to each student before applying the new method (pre-test). Another test was given to the same students after applying the new method (post-test). Experts consider that a good measure of improvement is given by the following formula: Improvement=20(Post-test score)- 10(Pre-test score). That...

A group of students agreed to participate in a study. Students were first asked to state...

A group of students agreed to participate in a study. Students were first asked to state their age and then to perform a maximal vertical jump. Each participant was allowed 3 attempts. Jump heights from males and females were averaged separately. 1.Identify the three variables in the study. 2.Describe the type of scale related to each variable (i.e. nominal, ordinal, interval, ratio) 3. Use use your own characteristics or activities to describe examples of nominal, ordinal, interval, and ratio. Of...

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...

There are 700 students in a middle school. At the end of the year, there is...

There are 700 students in a middle school. At the end of the year, there is a school-wide drawing for 3 identical new bicycles. Is this a combination or a permutation? Why? How many possible outcomes of the drawing are there? Suppose that bicycles in the drawing are not identical: One bike is plated in gold and valued significantly higher than the other two, the silver and bronze bikes, with the bronze being the cheapest. Does this change the number...

A group of 28 college students traveled to the Middle East. Several of the students had...

A group of 28 college students traveled to the Middle East. Several of the students had not received childhood immunization. Six of these students became sick with a febrile rash disease. One patient returned home early. He had fever, cough, conjunctivitis and a head cold. Within 24 hours of his arrival, he developed a rash that began on his forehead and spread to his trunk and extremities. List three viral diseases that could manifest these symptoms. (5 pts) During your...

You have been asked to participate on a committee charged with designing the ideal middle school....

You have been asked to participate on a committee charged with designing the ideal middle school. Given your knowledge of the developmental stages adolescents are traversing at this age, discuss three recommendations you would offer to promote the social, emotional, and academic development of the students and the rationale for each recommendation. (detailed answer please)

A high school runs a survey asking students if they participate in sports. The results are...

A high school runs a survey asking students if they participate in sports. The results are found below. Run an independence test for the data at α=0.01. Freshmen Sophomores Juniors Seniors Yes 75 88 55 42 No 30 28 38 40 Enter the test statistic - round to 4 decimal places.

A group of researchers is interested in middle school students and their willingness to appear to...

A group of researchers is interested in middle school students and their willingness to appear to stand out. A random sample of 260 middle school students is gathered, and the researchers ask them to wear bright orange shoes to school for a day. In the sample of 260 students, 192 were willing to wear the bright orange shoes. Estimate the overall proportion of middle school students that would be willing to wear bright orange shoes to school for the day....

Female students at a certain college participate in sports with the following probabilities: Soccer = 0.32...

Female students at a certain college participate in sports with the following probabilities: Soccer = 0.32 Basketball = 0.22 Tennis = 0.22 Both soccer and basketball = 0.06 All three sports = 0.03 Both soccer and tennis = 0.12 Both basketball and tennis = 0.05 a) Construct the associated Venn diagram with all probabilities specified. (HINT: start with the idea that Pr(S ∩ B ∩ T) = 0.03 and then work your way through the rest of the diagram). (SHOW...

Students at a certain school were surveyed, and it was estimated that 19% of college students...

Students at a certain school were surveyed, and it was estimated that 19% of college students abstain from drinking alcohol. To estimate this proportion in your school, how large a random sample would you need to estimate it to within 0.08 with probability 0.99, if before conducting the study (a) you are unwilling to predict the proportion value at your school and (b) you use the results from the surveyed school as a guideline. a. n= b. n=

Subjects