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Vitek1552 [10]
3 years ago
11

Whats between 0 and

middle" class="latex-formula">
Mathematics
1 answer:
Nataly_w [17]3 years ago
7 0
Pi divided by 2 is <span>1.57079632679 so anything bigger than 0 and less than that number should be between.</span>
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A jar contains 100 gum balls. There are 12 blue gum balls, 15 green gum balls, 37 red gum balls, and 36 yellow gum balls. What i
MissTica
Yellow gumballs = 36
Total = 100
\frac{36}{100}  =  \frac{9}{25}
The probability of randomly selecting a yellow gumball is
\frac{9}{25}
Hope this helps.
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Fine fare sells apple juice boxes in packages of 4 juice boxes for $2.00. What is the unit price of each juice box
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its 8 because if you do 4 times 2 equal 8

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Need help figuring this out ​
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Step-by-step explanation:

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The sum of a number and 17 is no less than 26
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I believe it would be as following:

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An article in Fire Technology investigated two different foam-expanding agents that can be used in the nozzles of firefighting s
UNO [17]

Answer:

Step-by-step explanation:

Hello!

The objective of this experiment is to test if two different foam-expanding agents have the same foam expansion capacity

Sample 1 (aqueous film forming foam)

n₁= 5

X[bar]₁= 4.7

S₁= 0.6

Sample 2 (alcohol-type concentrates )

n₂= 5

X[bar]₂= 6.8

S₂= 0.8

Both variables have a normal distribution and σ₁²= σ₂²= σ²= ?

The statistic to use to make the estimation and the hypothesis test is the t-statistic for independent samples.:

t= \frac{(X[bar]_1 - X[bar]_2) - (mu_1 - mu_2)}{Sa*\sqrt{\frac{1}{n_1} + \frac{1}{n_2 } } }

a) 95% CI

(X[bar]_1 - X[bar]_2) ± t_{n_1 + n_2 - 2}*Sa* \sqrt{\frac{1}{n_1}+\frac{1}{n_2} }

Sa²= \frac{(n_1-1)S_1^2 + (n_2-1)S_2^2}{n_1 + n_2 - 2}= \frac{(5-1)0.36 + (5-1)0.64}{5 + 5 - 2}= 0.5

Sa= 0.707ç

t_{n_1 + n_2 -2: 1 - \alpha /2} = t_{8; 0.975} = 2.306

(4.7-6.9) ± 2.306* (0.707\sqrt{\frac{1}{5}+\frac{1}{5} })

[-4.78; 0.38]

With a 95% confidence level you expect that the interval [-4.78; 0.38] will contain the population mean of the expansion capacity of both agents.

b.

The hypothesis is:

H₀: μ₁ - μ₂= 0

H₁: μ₁ - μ₂≠ 0

α: 0.05

The interval contains the cero, so the decision is to reject the null hypothesis.

<u>Complete question</u>

a. Find a 95% confidence interval on the difference in mean foam expansion of these two agents.

b. Based on the confidence interval, is there evidence to support the claim that there is no difference in mean foam expansion of these two agents?

8 0
3 years ago
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