![Lindy4886](/avatars/38508.jpg)
Lindy4886
18.03.2021 •
Mathematics
1. T-test for a single sample
You administer a survey of happiness to a sample of N = 4 students taking PSY-3205. The survey measures happiness on a 7-point Likert scale, with 4 being the happiness scale neutral mid-point (neither happy nor unhappy), 1 being very unhappy and 7 being very happy. You want to determine if the mean score measured from your population differs significantly from the neutral mid-point of 4.
Student ;Happiness Score
1 ; 2
2 ; 1
3 ; 2
4 ; 3
a) State the null hypothesis (H0) and the research hypothesis (H1)
b) Compute the sample mean M
c) Compute the degrees of freedom (df)
d) Fill out the following table and then estimate the population standard deviation (s)
X M X-M (X-M)2
2
1
2
3
SS:
Remember, s2 = SS/df
e) Write the expression for your T-statistic, and plug in the numbers to compute the t-score
f) Using your T-score table, for a 2-tailed test is your observation significant at the level of p<0.05? How about p < 0.01?
g) Compute Cohen’s d
h) What is the 95% confidence interval for the true population mean?
Solved
Show answers
More tips
- F Food and Cooking The Most Delicious and Simple Fish in Batter Recipe...
- D Dating, Love, Relationships How Long Can Love Last?...
- A Auto and Moto Mastering One-Movement Parking: All You Need to Know...
- C Computers and Internet How to Properly Order Clothing from International Online Stores...
- H Health and Medicine Headache: A Comprehensive Guide to Treatment...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- A Auto and Moto Discovering the Leader: What is the Most Expensive Car in the World?...
- F Food and Cooking How to Quickly Put your Child to Sleep?...
- C Computers and Internet How to Create a Website for Free and Easy?...
- F Family and Home Parquet or laminate, which is better?...
Answers on questions: Mathematics
- M Mathematics HURRY ITS ON EDGE. A science test, which is worth 100 points, consists of 24 questions. Each question is worth either 3 points or 5 points. If x is the number of 3-point...
- M Mathematics 1. What must be added to 3x -7 to make x 2 + 4x -1? 2.By how much does a 3 - 2a exceed a 2 + a - 6?...
- M Mathematics The total length of wires A, B and C is 445 cm. Wire A is 45 cm longer than wire B, and wire B is half as long as wire C. How long is wire A?...
- M Mathematics 1. Multiplicar los polinomios a. (−3x – 4) (4x + 5) b. (3y + 7) (y − 4) c. (3x − 1) (2x + 3) d. (5y + 2) (2y − 1) e. (x + 2) (x − 3) f. (−3x – 4) (−3x + 4) g. (y +...
- M Mathematics The temperature at 3:00pm was 15 degrees. At midnight the temperature was -2 degrees. What is the difference between those two temperatures...
- M Mathematics Janice is studying the effect of pipe size on water flow rates. In 12 minutes, 463.2 gallons of water flowed from a 2-inch pipe. In 7 minutes, 1730.4 gallons of water...
- M Mathematics Simplify 3.4 minus one-half (0.75). -4.1 -3.025 2.175 3.025...
- M Mathematics 10 points Let f(x)=1/x and g(x)=x^2+x . What two numbers are not in the domain of fog?...
- M Mathematics The temperature in Vancouver was recorded over a period of four hours the equation y=-2x+43 Describes the temperature over this time where y is the temperature in degrees...
- M Mathematics Given: and Prove: slope of × slope of = -1 StatementsReasons 1. is similar to Given 2. Property of similar triangles 3. slope of slope of Definition of slope 4. slope...
Ответ: