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PolarNik [594]
3 years ago
12

HELP PLEASE DON'T UNDERSTAND ​

Mathematics
1 answer:
lana66690 [7]3 years ago
8 0
For #3 the order on the number line from left to right is -2 1/6, -1.62, -1.26, .21, 3/11, 5/3, 2 2/9, 2.375
For #4
A. Repeats
B. Repeats
C. Terminates
D. Repeats
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A sample of size 6 will be drawn from a normal population with mean 61 and standard deviation 14. Use the TI-84 Plus calculator.
AVprozaik [17]

Answer:

X \sim N(61,14)  

Where \mu=61 and \sigma=14

Since the distribution for X is normal then the distribution for the sample mean  is also normal and given by:

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

\mu_{\bar X} = 61

\sigma_{\bar X}= \frac{14}{\sqrt{6}}= 5.715

So then is appropiate use the normal distribution to find the probabilities for \bar X

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 Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  The letter \phi(b) is used to denote the cumulative area for a b quantile on the normal standard distribution, or in other words: \phi(b)=P(z

Solution to the problem

Let X the random variable that represent the variable of interest of a population, and for this case we know the distribution for X is given by:

X \sim N(61,14)  

Where \mu=61 and \sigma=14

Since the distribution for X is normal then the distribution for the sample mean \bar X is also normal and given by:

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

\mu_{\bar X} = 61

\sigma_{\bar X}= \frac{14}{\sqrt{6}}= 5.715

So then is appropiate use the normal distribution to find the probabilities for \bar X

8 0
3 years ago
On the moon, a bag of sugar has a weight of 3.7 Newtons (N) and a mass of 2.26 kilograms (kg). Which of the following describes
ludmilkaskok [199]

Answer:

c

Step-by-step explanation:

mass will never change only weight will as weight is dependent on gravitational field strength

8 0
2 years ago
Someone help me asap
Marianna [84]
30 + 70 + D = 180
100 + D = 180
D = 80°
7 0
2 years ago
a storeowner orders 25 calculators that cost $36 each. The storeowner can sell each calculator for $51. The storeowner sold 22 c
pishuonlain [190]
$207 is the answer, multiply 25 x 36 and 22 x 51 and 3 x 5, then subtract the products from the first two multiplications and then subtract 15 and you get your answer.
7 0
3 years ago
Three candy bars cost $3.81 at this rate how much does 7 candy bars cost
Charra [1.4K]

Answer:

3.81 ÷3 = 1.27

1 27×7 = 8.89

7 candy bars cost $8.89

4 0
2 years ago
Read 2 more answers
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