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zepelin [54]
2 years ago
10

True or false: Least squares regression problems always have a unique solution, since they are modelled by the normal equation

Mathematics
1 answer:
Vilka [71]2 years ago
4 0

Answer: (((trueeee))))

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If the weight of a class 4 truck is increased by two tons will it still be classified as a class 4 truck
Assoli18 [71]
If the truck is 14,000 pounds and increases by 2 tons yes.  However if it is above 14,000 then no it will not be a class 4 truck.
8 0
3 years ago
A random sample has been taken from a normal distribution and the following confidence intervals constructed using the same data
LuckyWell [14K]

Answer:

(25.53, 37.87): 95% CI

(23.59, 39.81): 99% CI

Step-by-step explanation:

The margin of error of a confidence interval is given by:

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

z is related to the confidence level. The higher the confidence level, the higher the values of z, and thus, we wider the confidence interval is.

In this question:

The narrower C.I. is the 95%, and the wider is the 99%. So

(25.53, 37.87): 95% CI

(23.59, 39.81): 99% CI

4 0
3 years ago
If right I’ll mark brainlest
zubka84 [21]

Answer:

154m^2

Step-by-step explanation:

I hope this helps.

4 0
3 years ago
This is solving systems by substituting <br><br> y=-2x+5<br> 3y=-x-5
jok3333 [9.3K]

Answer:

y = - 3

Step-by-step explanation:

3(-2x+5)=-x-5

-6x+15=-x-5

-5x=-20

x=4

y=-2(4)+5

y=-3

7 0
3 years ago
PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA POINTS*.. <br> IM GIVING 40 POINTS !! DONT SKIP :((.
algol [13]

Answer:

-

Step-by-step explanation:

a minus sign.

6 0
3 years ago
Read 2 more answers
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