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3 years ago

More and more people own ferrets as pets. The number of ferrets owned

Mathematics

1 answer:

tatuchka [14]3 years ago

5 0

Answer:

Growth

Step-by-step explanation:

Growth is whenever there is a larger amount and Decay is when there is less of an amount it gets smaller. In the situation more people own ferrets as pets so therefore it's going to grow and so the answer is growth.

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The total amount of water a tank can hold is 14 1/2 gallons. Raul wants to find out how many 1 1/4 gallon buckets of water can b

sukhopar [10]

Answer: $\frac{29}{2}$ ÷ $\frac{5}{4}$ , $\frac{29}{2}$ × $\frac{4}{5}$

Step-by-step explanation: Let me know if you need an explanation.

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3 years ago

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For the polynomial shown below find f(1). f(x)=3x^4-x^2+4x-2

Feliz [49]

Answer:

f(1)=4

Step-by-step explanation:

f(1)=3(1)^4-(1)^2+4(1)-2

f(1)=3(1)-1+4-2

f(1)=3-1+4-2

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3 years ago

Solve the proportion

Vanyuwa [196]

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3 years ago

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blondinia [14]

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3 years ago

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Some transportation experts claim that it is the variability of speeds, rather than the level of speeds, that is a critical fact

scZoUnD [109]

Answer:

Explained below.

Step-by-step explanation:

The claim made by an expert is that driving conditions are dangerous if the variance of speeds exceeds 75 (mph)².

(1)

The hypothesis for both the test can be defined as:

H₀: The variance of speeds does not exceeds 75 (mph)², i.e. σ² ≤ 75.

Hₐ: The variance of speeds exceeds 75 (mph)², i.e. σ² > 75.

(2)

A Chi-square test will be used to perform the test.

The significance level of the test is, α = 0.05.

The degrees of freedom of the test is,

df = n - 1 = 55 - 1 = 54

Compute the critical value as follows:

$\chi^{2}_{\alpha, (n-1)}=\chi^{2}_{0.05, 54}=72.153$

Decision rule:

If the test statistic value is more than the critical value then the null hypothesis will be rejected and vice-versa.

(3)

Compute the test statistic as follows:

$\chi^{2}=\frac{(n-1)\times s^{2}}{\sigma^{2}}$

$=\frac{(55-1)\times 94.7}{75}\\\\=68.184$

The test statistic value is, 68.184.

Decision:

$cal.\chi^{2}=68.184$

The null hypothesis will not be rejected at 5% level of significance.

Conclusion:

The variance of speeds does not exceeds 75 (mph)². Thus, concluding that driving conditions are not dangerous on this highway.

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3 years ago