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g100num [7]
3 years ago
12

Help please and thank you

Mathematics
1 answer:
zhuklara [117]3 years ago
6 0
The answer is B
Triangle SCB
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A random sample of 18 fields of barley has a mean yield of 36.4 bushels per acre and standard deviation of 7.37 bushels per acre
dexar [7]

Answer:

So, the confidence interval is [34.08, 38.72].

Step-by-step explanation:

We know that a  random sample of 18 fields of barley has a mean yield of 36.4 bushels per acre and standard deviation of 7.37 bushels per acre.  

We have :

n=18\\\\\mu=36.4\\\\\sigma=7.37\\\\c=80\%

We use the Appendix: Critical Values Tables, and we get that:

t_{\frac{\alpha}{2}}=1.333

We calculate the margin of error:

E=t_{\frac{\alpha}{2}}\cdot \frac{\sigma}{\sqrt{n}}=1.333\cdot \frac{7.37}{\sqrt{18}}=2.32

We get the boundaries of the confidence interval:

\mu-E=36.4-2.32=34.08\\\\\mu+E=36.4+2.32=38.72\\

So, the confidence interval is [34.08, 38.72].

6 0
4 years ago
A farmer picked 5 fewer peaches than 3 times the apples. The table shows how the number of peaches, p, depends on the number of
gayaneshka [121]
I believe the answer is C, p = 3a-5
4 0
4 years ago
Read 2 more answers
State, with an​ explanation, whether the​ mean, median, or mode gives the best description of the following average.
harina [27]

Answer:

C. Mean

A. The distribution is probably symmetric with a single peak.

Step-by-step explanation:

Mean measurement would give best description of the average number of car accidents people had in their lifetime. There are very less chances of skewed distribution because of the nature of the problem.

The data set in this case is not likely to have extreme variations thats why outliers wont be a problem. Therefore, mean measurement would be a better choice than median.

Example:

The typical data for this problem would look something like this.

2, 4, 4, 3, 5, 2, 1, 3

Mean= Sum of all elements/no. of elements

mean= (2+4+4+3+5+2+1+3)/8=24/8=4

8 0
3 years ago
HELP TIMED IS THIS RIGHT?
Irina-Kira [14]

Answer:16 is the answer of your question

hope it is helpful to you

4 0
3 years ago
PLEASE HELP GIVING BRAINLIEST MUCH APPRECIATED
Lunna [17]

Answer:

The remaining area of the circle is 196.06 cm².

Step-by-step explanation:

<em>(area of circle) - (area of triangle)</em><em> </em><em>=</em><em> </em><em>remaining</em><em> </em><em>area </em><em>of </em><em>the </em><em>circle</em>

<em>πr² - ½bh</em>

<em>3.14(8)² - ½(3)(4)</em>

<em>3.14(64) - ½(12)</em>

<em>202.06 - 6</em>

<em>= 196.06</em>

4 0
3 years ago
Read 2 more answers
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