A sample of n=12 students were given a test to see how quickly they could solve a task, they were then given feedback and tested again. On average, students completed the task 75 seconds faster with a standard deviation of 20 seconds. Did the feedback help improve task completion in terms of how quickly the task was completed? *We're using t tests, so I'd assume a two sample t test.*

A survey of high school students revealed that the numbers of soft drinks consumed per month was normally distributed with mean 25 and standard deviation 15. A sample of 36 students was selected. What is the probability that the average number of soft drinks consumed per month for the sample was between 28.1 and 30 soft drinks?

Write only a number as your answer. Round to 4 decimal places (for example 0.0048). Do not write as a percentage.

1. A social science researcher collected data from a random sample of 400 students at a large university and found that, on average, they belonged to 2.6 campus organizations. The standard deviation σ for the population is 1.8.

1. Using these data, construct a 95% confidence interval for µ, the mean number of campus organizations belonged to by the population of students at this university.

2. Write a sentence to interpret your confidence interval, making sure to provide all the important information.

Choose a concept with which you are familiar, and imagine that you have to teach that concept to a classroom of students. Describe the concept that you will teach, then explain five specific things you could do to help students learn the concept.

Describe what contemporary psychologists mean by the terms schema, script, personal theory, and worldview, and explain how each of these can influence learning and memory. Use concrete examples to illustrate your discussion.

A recent study claimed that at least 15% of junior high students are overweight. In a sample of 160 students, 18 were found to be overweight. At α = 0.05, test the claim. Identify the claim, state the null and alternative hypotheses, find the critical value, find the standardized test statistic, make a decision on the null hypothesis (you may use a P-Value instead of the standardized test statistic), write an interpretation statement on the decision.

. What logistical issues are specific to working with students with special needs and how should a group leader attend to them? What logistical issues are specific to working with students of diverse backgrounds and how should a group leader attend to them? How are these issues different? Discuss each issue thoroughly, then tell what differences are necessary for a counselor to consider.  What differences in skills might the counselor need to work with each group?

A recent study claimed that at least 15% of junior high students are overweight. In a sample of 160 students, 18 were found to be overweight. Test the claim, using α = 0.05.

1. State the null and alternative hypotheses for the test. [3 marks]

(b) Calculate the value of the test statistic for this test. [2 marks]

(c) Calculate the p-value for this test. [2 marks]

(d) State the conclusion of this test. Give a reason for your answer

A group of students estimated the length of one minute without reference to a watch or​ clock, and the times​ (seconds) are listed below. Use a 0.05 significance level to test the claim that these times are from a population with a mean equal to 60 seconds. Does it appear that students are reasonably good at estimating one​ minute? 78 88 50 75 52 36 68 70 75 55 73 82 104 100 73

Display nonduplicate names in ascending order) Given one or more text files, each representing a day’s attendance in a course and containing the names of the students who attended the course on that particular day, write a program that displays, in ascending order, the names of those students who have attended at least one day of the course. The text file(s) is/are passed as command-line argument(s). USe language java, ide netbeans