Suppose that you collected data on the grades at a local middle school and you wanted...
Suppose that you collected data on the grades at a local middle school and you wanted to know if males were more likely to fail than females. Using the data shown below, what is the obtained chi-square? Round your answer to the nearest 2 decimal places.
Pass Fail
Males 100 27
Females 80 70
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Suppose that you collected data on the grades at a local middle
school and you wanted...
Genetics questions, i need help! 1) For the Drosophila red/white cross, you crossed red females and...
Genetics questions, i need help!
1) For the Drosophila red/white cross, you crossed red females and white males (w'w, wy). a) Draw the Punnett Square for this cross (F1). What is the ratio of red females:red males? b) Suppose in the F1 generation, you observed 70 red females and 30 red males. Do a Chi- Square Test to test the hypothesis of the ratio you found in part (a) above. Do you accept or reject the hypothesis? c) Draw the...
The data below was collected from random samples of high school students in various counties given...
The data below was collected from random samples of high school students in various counties given a new standardized test in science. SCORES LOCATION Fresno County L.A. County Kern County Sacramento County Fail Low Pass Pass High Pass 30 60 70 150 15 40 50 80 150 400 90 250 75 80 30 50 13.What sort of scale of measurement was used to record the scores of the students(Nominal, ordinal, interval or ratio)? 14.What sort of variable is represented by...
Plz help!! The programming language is C and could you write comments as well? Problem 2....
Plz help!! The programming
language is C and could you write comments as well?
Problem 2. Calculate Grades (35 points) Arrays can be used for any data type, such as int and char. But they can also be used for complex data types like structs. Structs can be simple, containing simple data types, but they can also contain more complex data types, such as another struct. So you could have a struct inside of a struct. This problem deals with...
Which of the following statements are correct about the phi-coefficient? Check all that apply. X It...
Which of the following statements are correct about the phi-coefficient? Check all that apply. X It can be used as a measure of effect size. It is determined only by the proportions in a 2 x 2 data matrix x It is the same as Cramer's V when the data are a 2 x 2 matrix. It can be used as a measure of the significance of a relationship between two dichotomous variables. Suppose you are looking at the relationship...
Suppose administrators at a large school district decide to institute mandatory study halls at their middle...
Suppose administrators at a large school district decide to institute mandatory study halls at their middle schools in an effort to boost their students' academic performance. After one year, a guidance counselor decides to test whether students' grade point averages (GPAs) have improved compared to the previous school year. The counselor selects a random sample of 25 eighth-graders from throughout the district who were also enrolled in the district for seventh grade. He records their GPAs for grades seven and...
Suppose administrators at a large school district decide to institute mandatory study halls at their middle...
Suppose administrators at a large school district decide to institute mandatory study halls at their middle schools in an effort to boost their students' academic performance. After one year, a guidance counselor decides to test whether students' grade point averages (GPAs) have improved compared to the previous school year. The counselor selects a random sample of 30 eighth-graders from throughout the district who were also enrolled in the district for seventh grade. He records their GPAs for grades seven and...
Question 5 (1 point) ✓ Saved Suppose you want to know whether travel experiences are related...
Question 5 (1 point) ✓ Saved Suppose you want to know whether travel experiences are related to knowledge of geography. You give a 15 item quiz on American Geography and you also ask how many states participants have visited then look to see if there is a relation between the 2 t-test O correlation Multiple Regression chi squared ANOVA (F test) Question 6 (1 point) ✓ Saved In an experiment designed to study the effects of exposure to an aggressive...
5-8 show work 5. 6. At a local high school 5000 juniors and seniors recently took...
5-8 show work
5. 6. At a local high school 5000 juniors and seniors recently took an aptitude test. The results of the exam were normally distributed with mean - 450 and o = 50. Calculate the following: a. The PERCENT of students to the nearest tenth of a percent that scored over 425 b. The number of students that scored more than 475 c. The probability of a student selected at random having scored between 400 and 575 A...
A psychologist wanted to know if students in her class were more likely to cheat if...
A psychologist wanted to know if students in her class were more likely to cheat if they were low achievers. She divided her 60 students into three groups (low, middle, and high) based on their mean exam score on the previous three tests. She then asked them to rate how likely they were to cheat on an exam if the opportunity presented itself with very limited chance for consequences. The students rated their desire to cheat on a scale ranging...
You have collected the following data on output and total variable costs: Q TVC ($) 10...
You have collected the following data on output and total variable costs: Q TVC ($) 10 72,800 20 124,400 30 159,600 40 183,200 50 200,000 60 214,800 70 232,400 80 257,600 90 295,200 100 350,000 Identify the range of output exhibiting increasing returns (increasing MP), and the range exhibiting diminishing returns (decreasing MP). Current fixed costs for the company equal $207,500. Draw two graphs, both with Q on the horizontal axis: one graph shows TVC and TC, and the other...
Genetics questions, i need help!
1) For the Drosophila red/white cross, you crossed red females and white males (w'w, wy). a) Draw the Punnett Square for this cross (F1). What is the ratio of red females:red males? b) Suppose in the F1 generation, you observed 70 red females and 30 red males. Do a Chi- Square Test to test the hypothesis of the ratio you found in part (a) above. Do you accept or reject the hypothesis? c) Draw the...
The data below was collected from random samples of high school students in various counties given a new standardized test in science. SCORES LOCATION Fresno County L.A. County Kern County Sacramento County Fail Low Pass Pass High Pass 30 60 70 150 15 40 50 80 150 400 90 250 75 80 30 50 13.What sort of scale of measurement was used to record the scores of the students(Nominal, ordinal, interval or ratio)? 14.What sort of variable is represented by...
Plz help!! The programming
language is C and could you write comments as well?
Problem 2. Calculate Grades (35 points) Arrays can be used for any data type, such as int and char. But they can also be used for complex data types like structs. Structs can be simple, containing simple data types, but they can also contain more complex data types, such as another struct. So you could have a struct inside of a struct. This problem deals with...
Which of the following statements are correct about the phi-coefficient? Check all that apply. X It can be used as a measure of effect size. It is determined only by the proportions in a 2 x 2 data matrix x It is the same as Cramer's V when the data are a 2 x 2 matrix. It can be used as a measure of the significance of a relationship between two dichotomous variables. Suppose you are looking at the relationship...
Suppose administrators at a large school district decide to institute mandatory study halls at their middle schools in an effort to boost their students' academic performance. After one year, a guidance counselor decides to test whether students' grade point averages (GPAs) have improved compared to the previous school year. The counselor selects a random sample of 25 eighth-graders from throughout the district who were also enrolled in the district for seventh grade. He records their GPAs for grades seven and...
Suppose administrators at a large school district decide to institute mandatory study halls at their middle schools in an effort to boost their students' academic performance. After one year, a guidance counselor decides to test whether students' grade point averages (GPAs) have improved compared to the previous school year. The counselor selects a random sample of 30 eighth-graders from throughout the district who were also enrolled in the district for seventh grade. He records their GPAs for grades seven and...
Question 5 (1 point) ✓ Saved Suppose you want to know whether travel experiences are related to knowledge of geography. You give a 15 item quiz on American Geography and you also ask how many states participants have visited then look to see if there is a relation between the 2 t-test O correlation Multiple Regression chi squared ANOVA (F test) Question 6 (1 point) ✓ Saved In an experiment designed to study the effects of exposure to an aggressive...
5-8 show work
5. 6. At a local high school 5000 juniors and seniors recently took an aptitude test. The results of the exam were normally distributed with mean - 450 and o = 50. Calculate the following: a. The PERCENT of students to the nearest tenth of a percent that scored over 425 b. The number of students that scored more than 475 c. The probability of a student selected at random having scored between 400 and 575 A...
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