A teacher has a section of 90 students. He wants to know if there is a...
A teacher has a section of 90 students. He wants to know if there is a significant difference in test performance across freshmen, sophomores, juniors, and seniors. What statistic would be needed to determine if the mean exam performance were different across the different class years?
| a. |
z for an individual score |
|
| b. |
z for a sample score |
|
| c. |
single sample t |
|
| d. |
related samples t |
|
| e. |
independent samples t |
|
| f. |
one-way ANOVA |
|
| g. |
two-way ANOVA |
|
| h. |
Correlation |
Homework Answers
Solution: The correct option is:
f. one-way ANOVA
Explanation:
In the given problem, the teacher wants to compare the mean performance of students across four different class years (freshmen, sophomores, juniors, and seniors). Since the teacher wants to compare more than two means, therefore, the teacher should use one-way ANOVA.
Add Answer to:
A teacher has a section of 90 students. He wants to know if
there is a...
QUESTION 3 A teacher sees students straggling into her class at highly diverse times. She secretly...
QUESTION 3 A teacher sees students straggling into her class at highly diverse times. She secretly records when each person comes into her class. Everyone in the class at the bell gets a score of zero. Then, as each late person comes in, the number of seconds after the bell that the person arrives is recorded. Number of seconds late, then, is each person's individual score. The scores ranged from 0 to 600 (for people who were 10 minutes late)....
Scenario 3. A 5th grade school teacher believes that she has an exceptionally gifted group of...
Scenario 3. A 5th grade school teacher believes that she has an exceptionally gifted group of students in her class this year. She learns that the national average score on the 5th grade annual test is 150, with a standard deviation of 30. She wants to compare her student’s scores to the national average. 1. What is the null hypothesis for scenario 3? a. HO: µ1 = µ2 b. HO: µ1 = µ2 =µ3 c. r = 0 d. H0:...
Nick decided to test if there was an association between students' class level and their food...
Nick decided to test if there was an association between students' class level and their food preference. He took a random sample of 245 students from his statistic class and found the following data. He plans to conduct a x2 test of independence. Use 3 decimal places where appropriate. Pizza Tacos Sandwich Salad Freshmen 23 18 7 5 Sophomores 19 25 10 12 Juniors 27 22 8. 8 Seniors 24 16 14 7 (a) Assuming that class year and food...
Q. Which analysis is appropriate? Who has the higher percentage of college smokers (students who answered...
Q. Which analysis is appropriate? Who has the higher percentage of college smokers (students who answered 'yes' to smoking): freshman, sophomore, juniors, or seniors? Group of answer choices A. Chi Square B. ANOVA C. Correlation D. Independent T-test
1 A researcher wants to find out which type of classroom instruction significantly improves students’ test...
1 A researcher wants to find out which type of classroom instruction significantly improves students’ test performance. He designed four types of instruction for four samples of students. Later all four samples were given the same test and their average performance was compared. What statistical test should be used by the researcher to analyze the results of this study? A. Pearson correlation B. t-test for independent groups C. one-factor Anova for between groups D. Chi2 for Independence 2 A researcher...
Scores on the SAT mathematics section have a normal distribution with mean 4-500 and standard deviation...
Scores on the SAT mathematics section have a normal distribution with mean 4-500 and standard deviation o=100. a. What proportion of students score above a 550 on the SAT mathematics section? Round your answer to 4 decimal places. b. Suppose that you choose a simple random sample of 16 students who took the SAT mathematics section and find the sample mean x of their scores. Which of the following best describes what you would expect? The sample mean will be...
A professor and researcher wants to know how his tardiness to class affects students behavior in...
A professor and researcher wants to know how his tardiness to class affects students behavior in class. For one class period he arrives 5 minutes early, on another day (for the same class) he arrives right on time and for a third day (in the same class) he arrives 5 minutes late. The researcher has planted research assistances in his class to measure the behavior the class. Which of the following statistical tests should be used to examine the data...
Keiran wants to know if there is a relationship between academic performance in math and language...
Keiran wants to know if there is a relationship between academic performance in math and language arts. He obtains Florida Standards Assessment test levels from several 5th grade students in Orange County. The test scores for both math and language arts tests are based on performance levels (i.e., ordinal levels) rather than scaled scores (i.e., interval). What statistical test should he use to determine the relative relationship between math and language arts performance? Group of answer choices Independent samples t-test...
An accounting professor wants to know if students perform the same on the departmental final exam irrespective of the accounting section they attend. She randomly selects the exam scores of 39 studen...
An accounting professor wants to know if students perform the same on the departmental final exam irrespective of the accounting section they attend. She randomly selects the exam scores of 39 students from four sections. A portion of the output from conducting a one-way ANOVA test is shown in the accompanying table. Assume exam scores are normally distributed. a. Find the missing values in the ANoVA table. (Round intermediate calculations to at least 4 decimal places. Round "SS to 2...
QUESTION 3 A teacher sees students straggling into her class at highly diverse times. She secretly records when each person comes into her class. Everyone in the class at the bell gets a score of zero. Then, as each late person comes in, the number of seconds after the bell that the person arrives is recorded. Number of seconds late, then, is each person's individual score. The scores ranged from 0 to 600 (for people who were 10 minutes late)....
Nick decided to test if there was an association between students' class level and their food preference. He took a random sample of 245 students from his statistic class and found the following data. He plans to conduct a x2 test of independence. Use 3 decimal places where appropriate. Pizza Tacos Sandwich Salad Freshmen 23 18 7 5 Sophomores 19 25 10 12 Juniors 27 22 8. 8 Seniors 24 16 14 7 (a) Assuming that class year and food...
Scores on the SAT mathematics section have a normal distribution with mean 4-500 and standard deviation o=100. a. What proportion of students score above a 550 on the SAT mathematics section? Round your answer to 4 decimal places. b. Suppose that you choose a simple random sample of 16 students who took the SAT mathematics section and find the sample mean x of their scores. Which of the following best describes what you would expect? The sample mean will be...
An accounting professor wants to know if students perform the same on the departmental final exam irrespective of the accounting section they attend. She randomly selects the exam scores of 39 students from four sections. A portion of the output from conducting a one-way ANOVA test is shown in the accompanying table. Assume exam scores are normally distributed. a. Find the missing values in the ANoVA table. (Round intermediate calculations to at least 4 decimal places. Round "SS to 2...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago