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R.R. Jha
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I am looking for someone that is good in statistics to do four
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I am looking for someone that is good in statistics to do four math problems.
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Expert:
R.R. Jha
replied 5 years ago.
Hi,
I'd love to help. Let me know what questions do you have.
Regards
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Customer:
replied 5 years ago.
Expert:
R.R. Jha
replied 5 years ago.
Here is the answer to #1
1)
I) a) z = (0.5  5.2)/3.8 = 1.237
So, zinterval is z ≤ 1.237
b) For x=2, z = (2  5.2)/3.8 = 1.895
For x=2.9, z = (2.9  5.2)/3.8 = 0.605
So, zinterval is 1.895 ≤ z ≤ 0.605
II) d) For z=2.8, x=5.2+2.8*3.8 = 15.84
So, xinterval is x ≥15.84
e) for z = 1, x = 5.21*3.8 = 1.4
For z=2.5, x = 5.2+2.5*3.8 = 14.7
So, xinterval is 1.4 ≤ x ≤ 14.7
III) 1) 0.01
2) 0.98
IV) 2.53
Please click Accept.
I'll post solution to next part asap.
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Expert:
R.R. Jha
replied 5 years ago.
Here is answer to #2
a) For x=1 hour, z = (12)/0.3 = 3.3333
For x=3 hour, z = (32)/0.3 = 3.3333
So, probability that drug would be effective for 1 to 3 hours is
P(1 ≤ x ≤ 3)
= P( 3.3333 ≤ z ≤ 3.3333)
= P(z ≤ 3.3333)  P(z ≤ 3.3333)
= 0.9996  0.0004
=
0.9992
Regards
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Expert:
R.R. Jha
replied 5 years ago.
Here is #3
a) Given µ = 390 and σ = 65,
For x=450, z = (450  390)/65 = 0.9231
So, probability that an individual male African tiger would weight more than 450 lb. is
P(x > 450)
= 1  P(x ≤ 450)
= 1  P(z ≤ 0.9231)
= 1  0.822
=
0.178
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Expert:
R.R. Jha
replied 5 years ago.
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