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Ivahew [28]
3 years ago
11

A study will be conducted to investigate whether there is a difference in mean tail lengths between two populations of snow leop

ards. Random samples of leopards will be selected from both populations, and the mean sample tail length will be calculated for each sample. Which of the following is the appropriate test for the study? A A two-sample t-test for a difference between population means Submit B A two-sample z-test for a difference between population proportions с A one-sample z-test for a population proportion D A one-sample t-test for a sample mean E A one-sample t-test for a population mean
Mathematics
1 answer:
Strike441 [17]3 years ago
7 0

Answer: A one-sample t -test for a sample mean

Step-by-step explanation: calculated for each sample.

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A slow boat to china travels at a constant speed of 17.25 miles per hour for 200 hours. how far was the voyage?​
tensa zangetsu [6.8K]

Answer:

3450 miles

Step-by-step explanation:

Multiply the number 17.25 by 200 since the boat is traveling for 200 hours and each hour is 17.25 miles to get 3450 miles which is your answer.

4 0
3 years ago
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Evaluate using <br> Definite integrals
swat32

Since [0,4]=[0,1]\cup(1,4], we can rewrite the integral as

\displaystyle \int_0^1f(t)\;dt + \int_1^4 f(t)\; dt

Now there is no ambiguity about the definition of f(t), because in each integral we are integrating a single part of its piecewise definition:

\displaystyle \int_0^1f(t)\;dt = \int_0^11-3t^2\;dt,\quad \int_1^4 f(t)\; dt = \int_1^4 2t\; dt

Both integrals are quite immediate: you only need to use the power rule

\displaystyle \int x^n\;dx=\dfrac{x^{n+1}}{n+1}

to get

\displaystyle \int_0^11-3t^2\;dt = \left[t-t^3\right]_0^1,\quad \int_1^4 2t\; dt = \left[t^2\right]_1^4

Now we only need to evaluate the antiderivatives:

\left[t-t^3\right]_0^1 = 1-1^3=0,\quad \left[t^2\right]_1^4 = 4^2-1^2=15

So, the final answer is 15.

4 0
3 years ago
Find the value of c.....
Makovka662 [10]

Answer:

Step-by-step explanation:

the sum of the angles in a triangle is 180

33+2c+c-18=180

3c=180+18-33

3c=165

c=165/3

c=55

7 0
3 years ago
Apa-bear weighs 250 lb. Mama-bear weighs 50 pounds less than Papa-bear does. Their 2 cubs weigh 80 pounds each. What is the tota
o-na [289]

Given :

Apa-bear weighs 250 lb.

Mama-bear weighs 50 pounds less than Papa-bear does.

Their 2 cubs weigh 80 pounds each.

To Find :

The total weight of the Bear family .

Solution :

Weight of mama bear = 250-50\ lb=200\ lb .

Total weight is the sum of all all weight .

W=\text{Weight of papa-bear + weight of mama-bear + weight of 2 cubs}

W=250+200+2\times 80\\\\W=250+200+160\\\\W=610 \ lb

Therefore , total weight of the Bear family is 610 lb .

Hence , this is the required solution .

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3 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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