Normal Random Variable

QuizÂ by jaime boy alegre

Statistics and Probability
Philippines Curriculum: SHS Core Subjects (MELC)

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15 questions
• Q1
1. The total area under the normal curve is______?
2
4
1
3
30s
• Q2
2. It is a random variable where the data can take infinitely many values.
none of these
continuous random variable
both discrete and continuous random variable
discrete random
30s
• Q3
3. Let X = 8 be a Normal random variable with parameters , mean = 1 and SD =3. Convert it to Z-score.
1.325
5.322
0
2.333
60s
• Q4
4. What proportion of cases in a normally distributed population will have z-scores greater than 1.0 or less than -1.0?
0.50
0.32
0.10
0.68
120s
• Q5
5. In normal distribution, define the relationship of the mean, median and the mode.
mean<median<mode
mean=median=mode
mean>median>mode
no relation found
30s
• Q6
6. Find the corresponding area between z=0 and z =0.96
0.3317
0.3316
0.3314
0.3315
45s
• Q7
7. Find the area of z = 1.74
0.4391
0.4491
0.4591
0.4291
45s
• Q8
8.Find the area of z = 2.18
0.4754
0.5054
0.4954
0.4854
45s
• Q9
9. Find the area of z = 2.69?
0.4684
0.4984
0.4974
0.4964
45s
• Q10
10. Find the area of z = 3.00
0.4787
0.4687
0.4987
0.4897
45s
• Q11
11. Compute the Z scores of the X =50, SD = 5 , mean = 40
4
2
8
6
120s
• Q12
12. Compute the Z scores of the X =40, SD = 8 , mean = 52
2.5
-2.5
1.5
-1.5
120s
• Q13
13. Compute the Z scores of the X =36, SD = 6 , mean = 28
-4/3
3/4
4/3
-3/4
120s
• Q14
14. Compute the Z scores of the X =74, SD = 10 , mean = 60
1.4
4.1
-4.1
-1.4
120s
• Q15
15. Compute the Z scores of the X =82, SD = 15 , mean = 75
7/15
-15/7
-7/15
15/7
120s

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