The reading speed of second grade students in a large city is approximately​ normal, with a mean of 89 words per minute​ (wpm) and a standard deviation of 10 wpm. A teacher instituted a new reading program at school.

After 10 weeks in the​ program, it was found that the mean reading speed of a random sample of 22 second grade students was 91.2 wpm. What might you conclude based on this​ result?

Select the correct choice below and fill in the answer boxes within your choice. ​(Type integers or decimals rounded to four decimal places as​ needed.)

A. A mean reading rate of 91.2 wpm is not unusual since the probability of obtaining a result of 91.2 wpm or more is ____. This means that we would expect a mean reading rate of 91.2 or higher from a population whose mean reading rate is 89 in _____ of every 100 random samples of size n=22 students. The new program is not abundantly more effective than the old program.

B. A mean reading rate of 91.2 wpm is unusual since the probability of obtaining a result of 91.2 wpm or more is ______. This means that we would expect a mean reading rate of 91.2 or higher from a population whose mean reading rate is 89 in _____ of every 100 random samples of size n=22 students. The new program is abundantly more effective than the old program.

Find the mean, mod, median, and standard deviation of the following data. And Based on these results, check whether the value of 10 is usual? 5, 6, 7, 8, 9,8,7,8 _________________________________________________________________________ Pre-Employment Drug Screening Results are shown in the following Table: Positive Test Result Negative Test Result Subject Uses Drugs 8 (True Positive) 2 (False Negative) Subject is not a Drug User 10 (False Positive) 180 (True Negative) If 1 of the 200 test subjects is randomly selected, find the probability that the subject had a positive test result, given that the subject actually uses drugs. That is, find (positive test result subject uses drugs). If 1 of the 200 test subjects is randomly selected, find the probability that the subject actually uses drugs, given that he or she had a positive test result. That is, find ( subject uses drugs positive test result ). _______________________________________________________________________ This is observation from previous years about the impact of students working while they are enrolled in classes, due to students too much work, they are spending less time on their classes. First, the observer need to find out, on average, how many hours a week students are working. They know from previous studies that the standard deviation of this variable is about 5 hours. A survey of 200 students provides a sample mean of 7.10 hours worked. What is a 95% confidence interval based on this sample?

A study was designed to compare the attitudes of two groups of nursing students towards computers. Group 1 had previously taken a statistical methods course that involved significant computer interaction. Group 2 had taken a statistic methods course that did not use computers. The students' attitudes were measured by administering the Computer Anxiety Rating Scale (CARS). A random sample of 10 nursing students from Group 1 resulted in a mean score of 65.8 with a standard deviation of 5.1. A random sample of 16 nursing students from Group 2 resulted in a mean score of 70.4 with a standard deviation of 7.6. Can you conclude that the mean score for Group 1 is significantly lower than the mean score for Group 2? Let μ1 represent the mean score for Group 1 and μ2 represent the mean score for Group 2. Use a significance level of α=0.05 for the test. Assume that the population variances are equal and that the two populations are normally distributed.

Step 1 of 4: State the null and alternative hypotheses for the test.

Step 2 of 4: Compute the value of the t test statistic. Round your answer to three decimal places.

Step 3 of 4: Determine the decision rule for rejecting the null hypothesis H0. Round your answer to three decimal places.

Step 4 of 4: State the test's conclusion.

This is in Java

1. Create an application called registrar that has the following classes:

a. A student class that minimally stores the following data fields for a student:

 Name

 Student id number

 Number of credits

 Total grade points earned            

And this class should also be provides the following methods:

 A constructor that initializes the name and id fields

 A method that returns the student name field

 A method that returns the student ID field

 Methods to set and retrieve the total number of credits

 Methods to set and retrieve the total number of grade points earned.

 A method that returns the GPA (grade points divided by credits)

b. An instructor class that minimally stores the following data fields for an instructor:

 Name

 Faculty id number

 Department
The following methods should be provided:

 A constructor that initializes the name and id fields

 Methods to set and retrieve the instructor’s department.

c. A course class that minimally stores the following data for a course:

 Name of the course

 Course registration code

 Maximum number of 50 students

 Instructor
 Number of students

 Students registered in the course (array)
The following methods should also be provided

 A constructor that initialize the name, registration code, and maximum number of students

 Methods to set and retrieve the instructor

 A method to search for a student in the course; the search should be based on an ID number.

 A method to add a student to the course.

 A method to remove a student from the course.

The Gourmand Cooking School runs short cooking courses at its small campus. Management has identified two cost drivers it uses in its budgeting and performance reports—the number of courses and the total number of students. For example, the school might run two courses in a month and have a total of 62 students enrolled in those two courses. Data concerning the company’s cost formulas appear below:

For example, administrative expenses should be $3,700 per month plus $40 per course plus $5 per student. The company’s sales should average $880 per student.

The company planned to run four courses with a total of 62 students; however, it actually ran four courses with a total of only 52 students. The actual operating results for September appear below:

Required:

1. Prepare the company’s planning budget for September.

2. Prepare the company’s flexible budget for September.

3. Calculate the revenue and spending variances for September.

The Gourmand Cooking School runs short cooking courses at its small campus. Management has identified two cost drivers it uses in its budgeting and performance reports—the number of courses and the total number of students. For example, the school might run two courses in a month and have a total of 61 students enrolled in those two courses. Data concerning the company’s cost formulas appear below:

For example, administrative expenses should be $3,700 per month plus $45 per course plus $7 per student. The company’s sales should average $890 per student.

The company planned to run four courses with a total of 61 students; however, it actually ran four courses with a total of only 59 students. The actual operating results for September appear below:

Required:

1. Prepare the company’s planning budget for September.

2. Prepare the company’s flexible budget for September.

3. Calculate the revenue and spending variances for September.

1. Using the 50-35-14-2 rule, sketch each of the distributions above.

2. For each variable, calculate the value of X at the 40^th %ile and the 61^nd %ile.

3. For each variable, calculate the %ile corresponding to a score of 4 on the variable.

4. 2013 SAT subscores for the nation are given below.

A) For the composite, what score do you need to qualify for Mensa, which requires you to be in the top 2% of the population?

B) Oddly enough, Phillip scored exactly 500 on each subscore… what percent of students scored higher in each subscore? What percent of students scored LOWER than his composite score of 1000?

C) MU admissions accept a 1080 composite score as sufficient to demonstrate potential success as a student. What percent of students qualify?

D) The MU honor’s college accepts incoming freshmen with a composite SAT of 1380 (if you were ALSO top 15%ile of high school class). What percent of students qualify with that composite score?

During this course you will design a program for a state university. The university needs a website design that will enable students to order books online. Each week you will receive additional instructions for the elements of the design based on the needs of the university. The elements will correspond with the concepts and skills you learn that week.

According to the university's website design request, students need to order five books, one for each of the five required courses that all students take. You need to design a program that will prompt students for the price of each book and display the total cost for the five books.

Create a 1- to 1 3/4-page document listing the steps needed to solve the problem using an algorithm, including the following:

• Identify the input needed
• Define what the input must do (i.e., the process)
• Show what the output must produce

Create a 1/2- to 1-page document of your pseudocode based on the algorithm, including the following:

• Write the pseudocode statement(s) for the input
• Write the pseudocode statement(s) for the process
• Write the pseudocode statement(s) for the output

Create a 1-page flowchart based on the algorithm, including the following:

• Mark the program's starting point
• Represent the input steps in the program
• Represent the process steps in the program
• Represent the output steps in the program
• Mark the program's ending point

The Gourmand Cooking School runs short cooking courses at its small campus. Management has identified two cost drivers it uses in its budgeting and performance reports—the number of courses and the total number of students. For example, the school might run two courses in a month and have a total of 64 students enrolled in those two courses. Data concerning the company’s cost formulas appear below:

For example, administrative expenses should be $3,900 per month plus $42 per course plus $5 per student. The company’s sales should average $870 per student.

The company planned to run four courses with a total of 64 students; however, it actually ran four courses with a total of only 60 students. The actual operating results for September appear below:

Required:

1. Prepare the company’s planning budget for September.

2. Prepare the company’s flexible budget for September.

3. Calculate the revenue and spending variances for September.