60,40,35,45,39
Put in order from least to greatest
35, 39, 40, 45, 60
Range = Max - Min
Range = 60 - 35
Range = 25
Answer
D) 25
A sample of size <em>n</em> taken from a normally distributed population with mean <em>µ</em> and standard deviation <em>σ</em> has a sample mean of <em>µ</em> and standard deviation of <em>σ</em>/√<em>n</em>.
So the sample mean would still be 180.1, while the sample standard deviation would be 100/√94 ≈ 10.31.
Step-by-step explanation:
3x+21 6x-60
=3x+6x 21-60
=18x 81
d.b.s by 18
18/18×81/18
0/1×4.7/1
x=4.7
I thinkthat the answer
Answer:
OK. 3.2 x 10^8 is 320,000,000.
1.4 x 10^6 is 1,400,000
subtract 1,400,000 from 320,000,000 and that's your answer.
Let X be the answers all 48 questions on a multiple-choice test by guessing.
<span>p = 1/4 </span>
<span>q = 1 - 1/4 = 3/4 </span>
<span>n = 48 </span>
<span>μx = n*p = 48*(1/4) = 12 </span>
<span>σx = sqrt(n*p*q) = sqrt(4/*(1/4)*(3/4)) = 0.8660254038 </span>
<span>P(X = 15) = P(X ≤ 16) - P(X ≤ 14) = P((X - 12)/0.8660254038 ≤ (16 - 12)/0.8660254038) - P((X - 12)/0.8660254038 ≤ (14 - 12)/0.8660254038) = P(Z ≤ 4.62) - P(Z ≤ 2.31) = 1 - 0.9896 = 0.0104 </span>
<span>You could use the binomial distribution: </span>
<span>P(X = 15) = 0.07670882173 </span>
<span>(48) </span>
<span>(15)*((1/4)^15)*(3/4)^33 = 0.07670882173</span>