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Fofino [41]
3 years ago
15

A population has a mean of 400 and a standard deviation of 90. suppose a sample of size 100 is selected and x is used to estimat

e μ.
Mathematics
1 answer:
Over [174]3 years ago
5 0
What were your given answer choices
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Olenka [21]

Answer:

a. y2×

b.y1×

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4 0
2 years ago
If (x-2) is a factor of x^3+kx^2 +12x-8 then k=?
AURORKA [14]

Answer:

k = - 6

Step-by-step explanation:

Since (x - 2) is a factor then x = 2 is a root

Substitute x = 2 into the polynomial and equate to zero, that is

2³ + k(2)² + 12(2) - 8 = 0

8 + 4k + 24 - 8 = 0

4k + 24 = 0 ( subtract 24 from both sides )

4k = - 24 ( divide both sides by 4 )

k = - 6

5 0
3 years ago
Plzzzzzzzzz help thank u
Vikki [24]

Answer:

I think the answer is A

A is the answer

6 0
2 years ago
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A toy company is making a miniature model of a dump truck. The steering wheel on the toy car that is 0.6 cm corresponds to the s
pentagon [3]
I used the 55.2 and the 0.6 to find a ratio of 92:1, so for every cm of toy car steering wheel there are 92 cm of real truck steering wheel. so using this ratio i times the 3.5cm of the toy car windshield by the 92, this gave me the answer of 322cm, which theoretically is the answer of this equation. 322cm.
6 0
3 years ago
Helpppp lol two questions
Lelechka [254]

Answer:

1. x= y/5 + 22/5    

2. y=17 − 3x2

Step-by-step explanation:

5 0
2 years ago
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