Data collected over a long period of time showed that 1 in 1000 high school students like mathematics. A random sample of 30,000 high school students was surveyed. Let X be the number of students in the sample who like mathematics

a) What is the probability distribution of X?

b) What distribution can be used to approximate the distribution of X? Explain.

c) Find the approximate probability of observing a value of X equal to 40 or more?

d) Find the approximate probability of observing a value of X between 35 and 40 inclusive ?

Data collected over a long period of time showed that 1 in 1000 high school students like mathematics. A random sample of 30,000 high school students was surveyed. Let X be the number of students in the sample who like mathematics

a) What is the probability distribution of X?

b) What distribution can be used to approximate the distribution of X? Explain.

c) Find the approximate probability of observing a value of X equal to 40 or more?

d) Find the approximate probability of observing a value of X between 35 and 40 inclusive ?

Given the scores on a certain exam are normally distributed with a mean of 75 and a standard deviation of 5

a. Calculate the z-score for 80. Find the percentage of students with scores above 80

b. Calculate the z-score for 60. Find the percentage of students with scores below 60.
c. Calculate the z-scores for 70 and 90. Find the percentage of students with scores between 70 and 90.
d. What is the median?
e. What test score value has a Z-score of -2.25?

f. What test score is the 85th percentile?

Write an XQUERY to display the information for all students who are not Malaysians or older than 25

<root>
<students>
   <element>
       <ID>100345</ID>
       <Nationality>USA</Nationality>
       <Program>ICT</Program>
       <age>23</age>
       <name>John</name>
   </element>
   <element>
       <ID>100876</ID>
       <Nationality>MALAYSIA</Nationality>
       <Program>CS</Program>
       <age>28</age>
       <name>Awang</name>
   </element>
   <element>
       <ID>100257</ID>
       <Nationality>AUSTRALIA</Nationality>
       <age>25</age>
       <name>Alex</name>
   </element>
</students>
</root>

PYTHON

Ask the user to enter the number of students in the class. Thereafter ask the user to enter the student names and scores as shown. Output the name and score of the student with the 2nd lowest score.

NOTE: You may assume all students have distinct scores between 0 and 100 inclusive and there are at least 2 students

NOTE: You may only use what has been taught in class so far for this assignment. You are not allowed to use more advanced topics like lists, functions, dictionaries etc for this assignment

For each of the studies, please indicate the following:

a) Independent variable(s)

b) Is there more than one independent variable?

c) Levels of the independent variable

d) Dependent variable                     

e) Level of measurement of the DV

Will students to do better in school if you “pay for grades”? To test this question, an instructor gives students a math test. Before taking the test, half the students were told that they would receive $0.25 for every correct answer. The other half was not given a monetary incentive. The number of correct answers was recorded for each student.

1. What is the z-score associated with the 75th percentile?

2. What z-scores bound the middle 50% of a normal distribution?

3. What z-score has 10% of the distribution above it?

4. What z-score has 20% of the distribution below it?

5. Reading comprehension scores for junior high students are normally distributed with a mean of80.0 and a standard deviation of 5.0.
a. What percent of students have scores greater than 87.5?

b. What percent of students have scores between 75 and 85

Create a SQLite Replit that creates a table representing students in a class, including at least name, graduation year, major, and GPA.

Include two queries searching this student data in different ways, for example searching for all students with graduation year of 2021, or all students with GPA above a certain number.

Here is an example you can work from: https://repl.it/@klmec/SQLExample (this is the default example from Replit; you can choose among several other examples when you create a new SQLite Replit).

C++

Description: You will write a program that reads students names followed by their final grade. It will output the names and their grade, followed by the corresponding letter grade. It will also print the name of the students(s) with the highest grade

• Student data will be stored in a struct called studentType which has 4 members:
  • fName
  • lName
  • score
  • letterGrade
• Assume there are 20 students
• Your main() function will only have variable definitions and function calls
  • You MUST have the following functions
    • readData
    • assignGrade
    • findHighest
    • printHighest

Many organizations perform surveysto determine the satisfaction of their customers. Attitudes toward various aspects of campus life were the subject of one such study conducted at University. Each item was rated on a 1 to 5 scale with 5 being high satisfaction and 0 being low. The average response of the 1568 first-year student respondantsto the "Feeling Welcomed at Purdue" item was 3.83 with a standard deviation of 1.10. The average response the 1023 sophomores to the "Feeling Welcomed" item was 3.72 with a standard deviation of 1.42. At significance level of 10% does this data provide evidence that first-year and sophomore students at Purdue feel differently about the welcomingness of the campus?

a.How many sample(s) is/are there?

b. You need to use______ procedures in this case.

c. The test statistic is (to four decimal places):

d. The p value is (to four decimal places):

We should conclude that:

We can also conclude that: