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artcher [175]
3 years ago
11

Questions on the images

Mathematics
2 answers:
KiRa [710]3 years ago
6 0

Answer: A

Step-by-step explanation:

12 x 12 = 144

39 x 39 = 1521

1521 - 144 = 1377

root 1377 = 37.1

Ksju [112]3 years ago
3 0
The answer is A on both.
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. Find the range of the data.<br><br> 7,4, 12, 1, 8, 8, 4, 14, 13, 9, 11, 10, 2,7,5, 3, 1, 8,5,3
Burka [1]

Answer:

Range: 13

Step-by-step explanation:

Population size:20

Lowest value: 1

Highest value: 14

Answer: 13

<em><u>Hope this helps.</u></em>

5 0
3 years ago
A simple random sample of 36 men from a normally distributed population results in a standard deviation of 10.1 beats per minute
Katyanochek1 [597]

Answer:

Step-by-step explanation:

Given that:

sample size n = 36

standard deviation = 10.1

level of significance ∝ = 0.10

The null hypothesis and the alternative hypothesis can be computed as follows:

H_0 : \sigma = 10

H_1 : \sigma \neq 10

The test statistics can be computed as follows:

X^2 = \dfrac{(n -1)s^2 }{\sigma ^2}

X^2 = \dfrac{(36 -1)10.1^2 }{10^2}

X^2 = \dfrac{(35)102.01 }{100}

X^2 = \dfrac{3570.35 }{100}

X^2 =35.704

degree of freedom = n - 1 = 36 - 1 = 35

Since this test is two tailed .

The P -value can be determined by using the EXCEL FUNCTION ( = 2 × CHIDIST(35.7035, 35)

P - value = 2 × 0.435163515

P - value = 0.8703      ( to four decimal places)

Decision Rule : To reject the null hypothesis if  P - value is less than the 0.10

Conclusion: We fail to reject null hypothesis ( accept null hypothesis) since p-value is greater than 0.10 and we conclude that there is sufficient claim that the normal range of pulse rates of adults given as 60 to 100 beats per minute resulted to a standard deviation of 10 beats per minute.

3 0
3 years ago
A car traveling at a certain speed will travel 76 feet per second. How man yards will the car travel in 120 seconds if it ma bra
lys-0071 [83]
The equation is 76*120/3.

76*120/3
9,120/3
3,040

The car will travel 3,040 yards in 120 seconds at that speed.
7 0
3 years ago
Help please!! I'm timed. <br><br>​
const2013 [10]
Answer: 42

explanation : 90-48=41
6 0
3 years ago
Wat is the answer to5n-16-8n=-10
stiks02 [169]
N=<span>−<span>2 is the answer and tell me if you need the steps </span></span>
4 0
3 years ago
Read 2 more answers
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