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IrinaVladis [17]
3 years ago
12

Conduct a hypothesis test to test the hypothesis that cloud seeding with silver nitrate increases rainfall. Use significance lev

el 0.1. Based on what you observed in answering the previous question, are you confident that this is a valid test? If not, what assumptions are violated?
Do I use the one sample t-test, two sample t-test, or the paired t-test?
Mathematics
1 answer:
Tomtit [17]3 years ago
3 0

Answer:

Paired t-test

Step-by-step explanation:

paired t–test is used  when there is one measurement variable and two nominal variables. The most common design is that one nominal variable represents individual organisms, while the other is "before" and "after" some treatment.

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A researcher is interested in estimating the mean blood alcohol content of people arrested for driving under the influence. Base
UNO [17]

Answer:

We need a sample size of at least 650

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

In this problem:

We need a sample of size at least n

n is found when M = 0.005, \sigma = 0.065

So

M = z*\frac{\sigma}{\sqrt{n}}

0.005 = 1.96*\frac{0.065}{\sqrt{n}}

0.005\sqrt{n} = 1.96*0.065

\sqrt{n} = \frac{1.96*0.065}{0.005}

(\sqrt{n})^{2} = (\frac{1.96*0.065}{0.005})^{2}

n = 649.23

Rounding up

We need a sample size of at least 650

7 0
3 years ago
Here are five digits 0,1,4,5,8 use all five digits to to make this correct _ _ x 2 = _ _
lesya [120]
Here are five digits 0,1,4,5,8 use all five digits to to make this correct _ _ x 2 = _ _
54x2=108
8 0
4 years ago
Mei is a park ranger at death valley national park in california. She records the elevation relative to sea level at different p
Vilka [71]

Answer: the mean is -1.1

Step-by-step explanation: add up each number and divide the sum by 5 since there are 5 numbers in the table. (-32.6 + 24.7 + -8.3 + 19.1 + -8.4 = -5.5/5 = -1.1

4 0
3 years ago
If Line l^1 has equation y = 11 - 3x Find the Equation of the Line through (5,3) parallel to l^1 So y = ??????
gregori [183]

Answer:

Step-by-step explanation:

Given equation of line is y = 11 - 3x

The equation takes the form of slope intercept equation ; y = mx + b where, m = slope and b = intercept.

Comparing the equation;

Slope, m = - 3

We obtain the equation of line passing through the point (5, 3) and parallel to the given line ;

y - y1 = m(x - x1)

x1 = 5 ; y1 = 3

y - 3 = - 3(x - 5)

y - 3 = - 3x + 15

y = - 3x + 15 + 3

y = - 3x + 18

6 0
3 years ago
Which of the following is the range of the function based on the input-output table?
andre [41]

Answer:

Range { 1000,1100,1200,1300,1400,1500,1600}

Step-by-step explanation:

The range of the function is the output, so it would be the  values of the pay per month

Range { 1000,1100,1200,1300,1400,1500,1600}

7 0
3 years ago
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