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hoa [83]
3 years ago
7

Please help im so lost right now

Mathematics
1 answer:
Ne4ueva [31]3 years ago
7 0
I feel like it x=89 degrees....Becuase that is what i got...
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100 more than the difference between 88 and 66
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Wouldn't the answer be 122
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Find the general solution of the differential equation y'' - 2y' - 3y = -3te^(-t)
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5 0
3 years ago
An SRS of 25 recent birth records at the local hospital was selected. In the sample, the average birth weight was x = 119.6 ounc
Evgen [1.6K]

Answer:

From the central limit theorem we know that the distribution for the sample mean \bar X is given by:

\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})

\mu_{\bar X}= \mu = 119.6

And now for the deviation we have this:

SE_{\bar X} = \frac{6.5}{\sqrt{25}}=1.3

So then the correct answer for this caee would be:

c. 1.30 ounces.

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

The central limit theorem states that "if we have a population with mean μ and standard deviation σ and take sufficiently large random samples from the population with replacement, then the distribution of the sample means will be approximately normally distributed. This will hold true regardless of whether the source population is normal or skewed, provided the sample size is sufficiently large".

Solution to the problem

From the central limit theorem we know that the distribution for the sample mean \bar X is given by:

\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})

\mu_{\bar X}= \mu = 119.6

And now for the deviation we have this:

SE_{\bar X} = \frac{6.5}{\sqrt{25}}=1.3

So then the correct answer for this caee would be:

c. 1.30 ounces.

6 0
3 years ago
What’s the rational exponent form of this
fredd [130]
To convert this into the rational form simply remember the rule:

M✔️X^n = X^n/M

6✔️43^1 = 43^1/6.
3 0
3 years ago
$2500 was invested for 3 years and earned $450 in intrest. Fine the rate of intrest
Aleksandr-060686 [28]
$450/3 = $150/year was earned
8 0
4 years ago
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