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Gwar [14]
3 years ago
15

What is the product of 1.3 and 7.02?

Mathematics
1 answer:
stellarik [79]3 years ago
3 0

Answer:  9.126

Step-by-step explanation:yw

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Simplify <br> (1/2k) (4k) + 12 <br><br> 2k 2 + 12<br> 14k 2<br> 2k + 12<br> 14k
Lady bird [3.3K]

Answer:

(1/2) (4k) + 12 = 2k + 12

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25 feet per second.

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Give a 98% confidence interval for one population mean, given asample of 28 data points with sample mean 30.0 and sample standar
klio [65]

We have a sample of 28 data points. The sample mean is 30.0 and the sample standard deviation is 2.40. The confidence level required is 98%. Then, we calculate α by:

\begin{gathered} 1-\alpha=0.98 \\ \alpha=0.02 \end{gathered}

The confidence interval for the population mean, given the sample mean μ and the sample standard deviation σ, can be calculated as:

CI(\mu)=\lbrack x-Z_{1-\frac{\alpha}{2}}\cdot\frac{\sigma}{\sqrt[]{n}},x+Z_{1-\frac{\alpha}{2}}\cdot\frac{\sigma}{\sqrt[]{n}}\rbrack

Where n is the sample size, and Z is the z-score for 1 - α/2. Using the known values:

CI(\mu)=\lbrack30.0-Z_{0.99}\cdot\frac{2.40}{\sqrt[]{28}},30.0+Z_{0.99}\cdot\frac{2.40}{\sqrt[]{28}}\rbrack

Where (from tables):

Z_{0.99}=2.33

Finally, the interval at 98% confidence level is:

CI(\mu)=\lbrack28.94,31.06\rbrack

4 0
1 year ago
At which points is the slope negative?
klio [65]
The graph increases untill day 4(slope= positive) and then is stays constant(slope=0). Starting at day 8 the slope changes to be negative

Answer:From the 8th day to the 10th day

Hope this helps:)
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2 years ago
A pharmacist put 2.415 ounces of vitamin pills into bottles. She put 0.023 ounces of vitamin
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Answer: 105 bottles

Step-by-step explanation: You divide the amount used and how much was in each one. :)

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2 years ago
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