# DAY 1

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15 questions
• Q1

What is the total standard distribution of a bell curve?

2

0

It depends.

1

20s
• Q2

The tails of the curve in the normal distribution can be extended but it will never touch the x-axis. What type of line is it called?

skewness

asymptotic

ouliers

parallel lines

20s
• Q3

What is the z-score that has the area of 0.4641?

2.2

-1.8

-2.6

2.0

20s
• Q4

What is the z-score that has the area of 0.4641?

2.2

-1.8

2.0

-2.6

20s
• Q5

Given the illustration below, what is the area of the data?

0.4943

0.4493

0.4349

0.3944

20s
• Q6

What will be the representation of z = -2.49?

20s
• Q7

Can the z-score exceed 3.29?

Yes, but it is unusual.

Given the following data: z-score = 1.09,standard deviation = 22 and a sample of 80, what will be our mean?

Normal curve was created and expanded by Gauss.

Yes, always.

20s
• Q8

The following statements are true except for?

Normal curve was created and expanded by Gauss.

The computed value in standard normal distribution is called z-score.

20s
• Q9

Given the following data: z-score = 1.09, standard deviation = 22, and a sample of 80, what will be our mean?

103.98

56.02

65.20

89.04

300s
• Q10

Students recently took National AchievementTest. The scores of a group of students have an expected value of 72 and a standard deviation of 7. What percentage of students got 60?

44.63%

40.82%

54.63%

45.64%

300s
• Q11

The scores of students from Grade 9-Mapagmahal have a variance of 20 and a sample score of 11. With the help of the information mentioned, what will be the average score of the students if we have a z-score of 2.46?

65.0

53.3

58.8

60.2

300s
• Q12

Sawa Na Co. conducted their yearly check-up last Monday. The result of the check-up said that the average weight of their employees is 68 kg. It was also found out that the variance of the data is 12. What will be the z-score if a sample of 50 kg was drawn?

-1.5

1.5

-3.8

3.8

300s
• Q13

For numbers 12-13. Sawa Na Co. conducted their yearly check-up last Monday. The result of the check-up said that the average weight of their employees is 68 kg. It was also found out that the variance of the data is 12.

What will be z-score and area if the average weight was 64 kg and the sample weight is 67 kg?

1.08; 0.3529

-0.75; 0.2734

0.25; 0.0987

0.13; 0.0517

300s
• Q14

The time taken to assemble a Gundam figure is a random variable having a normal distribution of 45 minutes and a standard deviation of 20 minutes.

What is the probability that a Gundam figure will be assembled in just 36 minutes?

24.22%

13.68%

17.36%

15.54%

300s
• Q15

The time taken to assemble a Gundam figure is a random variable having a normal distribution of 45 minutes and a standard deviation of 20 minutes.

What is the probability that a Gundam figure will be assembled in just 36 minutes?

5.96%

13.68%

9.87%

6.36%

300s

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