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Lesson Example Discussion Quiz: Class Homework

Step-5

Title: Binomial distribution

Grade: 9-a Lesson: S4-L4

Explanation: Hello Students, time to practice and review the steps for the problem.

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	The probability of a random customer ordering a vegetarian meal in the Ampala restaurant is 0.2.Find the mean and variance of the vegetarian meals in a total of 40 orders.?
2	Step	From the given data	n= 40,p=0.2
3	Step	Finding the value of q	q = 1-p q = 1-0.2 ⇒ q=0.8
4	Formula:	Mean \$\mu\$ = np
5	Step	\$\mu\$	40 × 0.2
6	Step	Mean \$\mu\$	8
7	Step	Variance \$\sigma^2\$ = npq
8	Step	\$\sigma^2\$	40 × 0.2 × 0.8
9	Step	Variance \$\sigma^2\$	6.4
10	Step	Mean and variance of the vegetarian meals in a total of 40 orders	\$\mu\$ = 8 \$\sigma^2\$ = 6.4
11		Answer	A

Step

Type

Explanation

Answer

Problem

The probability of a random customer ordering a vegetarian meal in the Ampala restaurant is 0.2.Find the mean and variance of the vegetarian meals in a total of 40 orders.?

Step

From the given data

n= 40,p=0.2

Step

Finding the value of q

q = 1-p
q = 1-0.2 ⇒ q=0.8

Formula:

Mean \$\mu\$ = np

Step

\$\mu\$

40 × 0.2

Step

Mean \$\mu\$

Step

Variance \$\sigma^2\$ = npq

Step

\$\sigma^2\$

40 × 0.2 × 0.8

Step

Variance \$\sigma^2\$

6.4

Step

Mean and variance of the vegetarian meals in a total of 40 orders

\$\mu\$ = 8

\$\sigma^2\$ = 6.4

Answer

Tutor: Questions

Seq	Type	Question
1	Problem	What did you learn from this problem?
2	Clue	What did you learn from the clues?
3	Hint	What did you learn from the Hints?
4	Step	What did you learn from the Steps?
5	Step	How can we improve the Steps?

Seq

Type

Question

Audio

Problem

What did you learn from this problem?

Clue

What did you learn from the clues?

Hint

What did you learn from the Hints?

Step

What did you learn from the Steps?

Step

How can we improve the Steps?