How big is it? I need to know like fr
2 answers:
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a) the Probability p( red, red, red) is 0.83%.
b) the probability p(white, red, white) is 0.
<u>Step-by-step explanation:</u>
The total number of marbles = 3+6+1.
=10.
a) to find the Probability p( red, red, red).
p( red, red, red)=
p( red, red, red)=×
×
.
p(red,red,red)= 0.0083.
p(red,red,red)=0.83%
b)to find the probability p(white, red, white).
p(white, red, white) is 0.
Since there is only one white.
Answer:
a. The sample size is approximately 97 adults
Step-by-step explanation:
The given parameters are;
The number of adults surveyed, n = 174
The lowest value of the pulse rate = 39 bpm
The highest value of the pulse rate = 111 bpm
The level of confidence used for determining the sample size = 90%
The given sample mean = 3 pm of the population mean
a. The range rule of thumb states that the standard deviation is approximately one quarter (1/4) of the range
The range = 111 bpm - 39 bpm = 72 bpm
Therefore, the standard deviation, σ = 72 bpm/4 = 18 bpm
The sample size, 'N', is given as follows;
Where;
N = The sample size
z = The confidence level, 90% (z-score at 90% = 1.645)
p·q = σ² = 18² = 324
e² = 3² = 9
Therefore the appropriate sample size, N ≈ 97 adults.