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Kamila [148]
2 years ago
9

Y=5x-8 linear or non linear

Mathematics
1 answer:
Mademuasel [1]2 years ago
7 0
Linear because it’s in y=mx+b form
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A simple random sample of size nequals40 is drawn from a population. The sample mean is found to be 103.9​, and the sample stand
yan [13]

Answer:

There is enough evidence to support the claim that the population mean is greater than 100

Step-by-step explanation:

<u>Step 1</u>: We state the hypothesis and identify the claim

H_0:\mu=100 and H_1:\mu \:>\:100 (claim)

<u>Step 2</u>: Calculate the test value.

t=\frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }

\implies t=\frac{103.9-100}{\frac{21.9}{\sqrt{40} } }=1.1263

<u>Step 3</u>: Find the P-value. The p-value obtained from a calculator is using d.f=39 and test-value 1.126 is 0.134

<u>Step 4</u>: We fail to reject the null hypothesis since P-value  is greater that the alpha level. (0.134>0.05).

<u>Step 5</u>: There is enough evidence to support the claim that the population mean is greater than 100.

<u>Alternatively</u>: We could also calculate the critical value to obtain +1.685 for \alpha=0.05 and d.f=39 and compare to the test-value:

The critical value (1.685>1.126) falls in the non-rejection region. See attachment.

NB: The t- distribution must be used because the population standard deviation is not known.

5 0
3 years ago
Pls help me I will pick brainliest answer with tape diagram
NikAS [45]

Answer:

5mins- 300s

210mins- 12600s

5mins-3

210mins-?

300/3=12600/x

x=12600/300 x 3

=126

or 210/5=42

42x3=126

6 0
3 years ago
Please solve 7(b+2) = 49
Inessa05 [86]

Answer: b=5

Step-by-step explanation:

7(b+2)=49

7b + 14= 49

7b = 49-14

7b= 35

b=35/7

b=5

4 0
3 years ago
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Mr. White invested his P260,000 in a bank that offered her 5% simple interest rate. How much will be the interest of his money a
boyakko [2]

Answer:

273684.210526

Step-by-step explanation:

260000 / .95 = 273684.210526

8 0
2 years ago
Chana and Josiah started skating at the same time in the same direction, but Josiah had a head start 10
Arlecino [84]

Answer:B

Step-by-step explanation:

5 0
2 years ago
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