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3 years ago

[Statistics and Probability] How to find if something is mutually exclusive given a sample space?

Mathematics

1 answer:

Anastasy [175]3 years ago

6 0

Also, not being mutually exclusive could be proven by showing there are values in the intersection: A ∩ B

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On Day 16, Ebony deposited $100 into her account. On each day after Day 16, segment 5, Ebony made a deposit, and those deposits

marishachu [46]

Step-by-step explanation:

Judging from the high of 400, her day 21 appears to be approx 300

if she put in 100 then the next five days she added a total of 200 more to reach 300

200/5 = $40 / day

5 0

3 years ago

¿Cuál es el área de un rectángulo que mide 1/2 cm de base y 3/8 cm de altura ?

ch4aika [34]

Answer:

3/16

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

You randomly draw a marble out of a bag that contains 20 total marbles. 12 of the marbles in the bag are blue.

Anon25 [30]

P( blue marble) is 12 / 20 = 0.6

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3 years ago

The proportion of junior executives leaving large manufacturing companies within three years is to be estimated within 3 percent

Leona [35]

Answer: 709

Step-by-step explanation:

The formulas we use to find the required sample size :-

1. $n=(\dfrac{z^*\cdot \sigma}{E})^2$

, where $\sigma$ = population standard deviation,

E = Margin of error .

z* = Critical value

2. $n=p(1-p)(\dfrac{z^*}{E})^2$ , where p= prior estimate of population proportion.

3. If prior estimate of population proportion is unavailable , then we take p= 0.5 and the formula becomes

$n=0.25(\dfrac{z^*}{E})^2$

Given : Margin of error : E= 3% =0.03

Critical value for 95% confidence interval = z*= 1.96

A study conducted several years ago revealed that the percent of junior executives leaving within three years was 21%.

i.e. p=0.21

Then by formula 2., the required sample size will be :

$n=0.21(1-0.21)(\dfrac{1.96}{0.03})^2$

$n=0.21(0.79)(65.3333)^2$

$n=(0.1659)(4268.44008889)\\\\ n=708.134933333\approx709$ [Round to the next integer.]

Hence, the required sample size of junior executives should be studied = 709

4 0

4 years ago

Solve this equation (2.2)(4.5)(0.6)

mote1985 [20]

Your answer would be 5.94.

4 0

3 years ago