Complete Question
The complete question is shown on the uploaded image
Answer:
1 ) The correct option B
2) The correct option is C
3) The correct option is C
4) The correct option is C
Step-by-step explanation:
From the question we are told that
The proportion that own a cell phone is
The sample size is n = 15
Generally the appropriate distribution for X is mathematically represented as
So
Generally the number students that own a cell phone in a simple random sample of 15 students is mathematically represented as
Generally the standard deviation of the number of students who own a cell phone in a simple random sample of 15 students is mathematically represented as
Where q is mathematically evaluated as
Generally the probability that all students in a simple random sample of 15 students own a cell phone is mathematically represented as
From the combination calculator is
Answer:
8
Step-by-step explanation:
Take 112/15
You get 7.4667
We make it 8 because you can't have .4667 of a class
Hope this helps
Answer:
He is incorrect in this statement because 38 and 40 both have factors, other than 1 x itself. Prime numbers are numbers the only have 1 factor pair, and that is 1 x itself. Factors are the numbers you multiply to get the end result, and an example is 10x4=40. The factors of 40 are 8x5, 4x10, 2x20, and of course, 1x40. The factors of 38 are 2x19, and 1x38.
Answer: 3/10
Explanation:
The probability of getting a blue is 1/10
I suppose it tells you that the total amount of balls are 10 because the denominator is 10 and the number of blue ball is 1.
But red ball is twice the white.
2W = R
Thus
2W + W = 9
3W = 9
W = 9/3
W = 3
So then there would be 3 white ball in the bag.
We can write the probability:
P(W) = 3/10
Answer:
1. C)
2. D)
Step-by-step explanation:
We know that:
1/3 is afraid of spiders
1/12 fears spiders and snakes
Then, the proportion of children who fear spiders and also snakes is calculated as:
Option C)
Of the 1/3 of children who fear spiders, 1/4 of them also fear snakes.
Now:
1/2 is afraid of the serientes
1/12 fears spiders and snakes
Then, the proportion of children who fear spiders and also snakes is calculated as:
Option D)
Of the 1/2 of children who fear snakes, 1/6 of them also fear spiders