The probability will be :
C(12,2) / C(40,2) = 11/130, which is around 8.46%
Complete Question
The complete question is shown on the first uploaded image
Answer:
The value is ![z = \pm 1.645](https://tex.z-dn.net/?f=z%20%3D%20%5Cpm%201.645)
Step-by-step explanation:
From the question we are told that
The number of observation is greater than 50 i.e. n > 50
The level of significance is ![\alpha = 0.1](https://tex.z-dn.net/?f=%5Calpha%20%20%3D%200.1)
Generally given that n > 30 then we will make use of the z table
So
From the z table the critical value corresponding to the level of significance level for a two-tailed test is
![z = \pm 1.645](https://tex.z-dn.net/?f=z%20%3D%20%5Cpm%201.645)
Answer:
Step-by-step explanation:
xy is the coefficient of 6m, mxy is the coefficient of 6 and so on……. Note: In the term 'm', the coefficient of m is 1 since 1 times m is equal to m. Similarly, in the term '-m' the coefficient of m is -1 since -1 times m is equal to -m.
Answer:
500
Step-by-step explanation:
Is means equals and of means multiply
90 = 18% * N where N is the number
90 = .18 N
Divide each side by .18
90/.18 = N
500 = N
Answer: 1.1
Step-by-step explanation:
If Sam buys 14 water bottles, he will have spent 18.9, so when you subtract 20 (the limit) from 18.9 (how much money he'll spend on the water bottles) you get 1.1