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Nina [5.8K]
3 years ago
10

A random sample of size results in a sample mean of and a sample standard deviation of . An independent sample of size results i

n a sample mean of and sample standard deviation of . Does this constitute sufficient evidence to conclude that the population means differ at the level of​ significance?
Mathematics
1 answer:
Studentka2010 [4]3 years ago
3 0

Answer:

A typical example would be when a statistician wishes to estimate the ... by the standard deviation ó) is known, then the standard error of the sample mean is given by the formula: ... The central limit theorem is a significant result which depends on sample size. ... So, the sample mean X/n has maximum variance 0.25/ n.

Step-by-step explanation:

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How much time has passed from the first clock to the second clock?
bonufazy [111]

Answer:

Step-by-step explanation:

Time for first clock is 8:34

Time for second clock is 11:48

subtract them: 11 hrs. 48 min.

                      - 8 hrs. 34 min.

                      _____________

                        3 hrs. 14 min.

4 0
2 years ago
Find the average rate of change, in simplest form,<br> of the function over the interval 3 ≤ x ≤ 5
gavmur [86]
The answer to your question that you’re trying to figure out is [3,5]
3 0
1 year ago
Find the 20th, 40th, 60th, and 80th percentiles of the standard normal distribution. Round the answers to two decimal places.
Fed [463]
To answer the question above, we have to use the z-score percentile table for the standard normal distribution. It shows:
The 20th percentile  =  - 0.84
The 40th percentile  =  - 0.25
The 60th percentile  =    0.25
The 80th percentile  =    0.84 

I hope my answer helped you. Have a nice day!
3 0
3 years ago
The vertices of a triangle are A(0, 0), B(3, 8), and C(9, 0). What is the area of this triangle?
Harlamova29_29 [7]
Answer: 36 units squared.


Explanation:
Area of a traingle is given by,

| 0.5{x1(y2-y3) + x2(y3-y1) + x3(y1-y2)} |

Accepting the values of the coordinates in x's and y's,

x1 =0, y1=0

x2=3, y2=8

x3 =9, y3=0

= | 0.5 × (-72)|
= 36 unit squared.
8 0
3 years ago
Read 2 more answers
Can someone help out?​
Tamiku [17]

Answer:

152.9 ft

Step-by-step explanation:

14*8=112

8*4=32

112+32+8.9=152.9

8 0
2 years ago
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