Researchers interviewed street prostitutes in Canada and the United States. The mean age of the 100 Canadian prostitutes upon entering prostitution was 19 with a standard deviation of seven. The mean age of the 130 United States prostitutes upon entering prostitution was 21 with a standard deviation of nine. Is the mean age of entering prostitution in Canada lower than the mean age in the United States

Answers

Answer 1

Answer:

Step-by-step explanation:

The null and the alternative hypothesis is:

[tex]H_o: \mu_c \ge \mu_{us}[/tex]

[tex]H_a : \mu_c < \mu_{us}[/tex]

The t- student test statistics can be computed as:

[tex]t = \dfrac{x_c- x_{us}}{\sqrt{\dfrac{\sigma_c^2}{n_c} + \dfrac{\sigma_{us}^2}{n_{us}} }}[/tex]

[tex]t = \dfrac{19- 21}{\sqrt{\dfrac{7^2}{100} + \dfrac{8^2}{130} }}[/tex]

t = -2.017  

degree of freedom = (n₁ - 1) + (n₂ - 1)  

= (100 - 1) + (130 - 1)

= 228

Using the data of t-value and degree of freedom;  

The P-value = -0.224

Decision rule: Do not reject the null hypothesis if the p-value is greater than ∝(0.01)

Conclusion: We reject the null hypothesis since the p-value is less than ∝.

Therefore, there is enough evidence to conclude that the mean age of entering prostitution in Canada is lower than that of the United States.


Related Questions

Clare has 80 pencils and 56 erasers to give away. What is the largest number of group that can formed with the same numbers of pencils and erasers in each group?

Answers

Answer:

56

Step-by-step explanation:

I assume each person in the group must have 1 pencil AND 1 eraser each.

Since you have more pencils than erasers, then the limiting factor is the number of erasers. So a group of 56 people will have 1 pencil And 1 eraser and Clare will have 24 pencils left over (assuming Clare has her own pencil and eraser - if not then the group size is 55 assuming Clare is not in the group)

sorry if it's too confusing

Which best describes the transformation that occurs from the graph of f(x) = x2 to g(x) = (x + 3)2 + 4?

left 3, up 4
right 3, down 4
left 3, down 4
right 3, up 4

Answers

Answer:

Left 3 down 4 is the correct answer so C

Answer:

B. right 3, down 4

Step-by-step explanation:

Which function rule represents the data in the table below ?

y = 4 + 5 x
y = 3 + 6x
y= 5 + 4x
y = 6 + 3x

Answers

The answer is y = 3 + 6x. This is because if you put the numbers in replacement for x and y, it will always equal.

What is the value of x? Justify each step. Given: AB bisects RAN. each angle BAN = (2x-75)​

Answers

Answer:

The answer is portrayed in the picture below.

All copyright claims will proceed to Brainly Corporation.

1. Which other expression has the same value as -14 - (-8)?​

Answers

-14 + 8 is same as -14 - (-8)

Hope this helps, thank you :) !!
If you give me the answer options, I can help

Chloe has $15 to spend on pencils. Each box of pencils costs $2. How many
boxes of pencils can Chloe have buy? How much money will she have left
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Answers

Chloe can buy 7 pencil boxes and have 1 dollar left

helppppppppppp me please yes please yes lol yes plea

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Answer:

C. 16

Step-by-step explanation:

A number squared means you need to multiply it by itself

So, 4 x 4 = 16

Answer:

c. 16

Step-by-step explanation:

multiply 4 two times because it's squared

4 x 4 = 16

PLEASE HURRYY!!

2. Triangle ABC has angle measures as shown.

(a) What is the value of x? Show your work.
(b) What is the measure of angle C? Show your work.

Answers

Answer:

x = 70

c = 72

Step-by-step explanation:

7(11p + 3) -9 p equals ​

Answers

Answer: 68p+21

Step-by-step explanation:

8.- Observa la siguiente operación y determina la respuesta correcta. [(-
35+14-63) + (-7)] ×
(-3)​

Answers

Answer:

la respuesta es +273 porque menos por menos es igual a +

A basketball player is 80 inches tall. A model of a basketball player is 5 inches tall. What is the scale factor?

Answers

Answer:

1/16

Step-by-step explanation:

divide 5 into 80 to get 16 which 5 is 1/16th of 80

What is the length of arc S shown below? Enter an exact expression. The angle in the figure is a central angle in radians.

Answers

Answer:

The arc length  S = 11.304 cm

Step-by-step explanation:

Explanation:-

Given that the radius of the circle 'r' = 6 cm

Given that the central angle = [tex]\frac{3\pi }{5}[/tex]

The Arc length is defined by

                 S = r θ

                S = 6 × [tex]\frac{3\pi }{5}[/tex]

                [tex]S = \frac{18\pi }{5}[/tex]

               [tex]S = \frac{18(3.14) }{5}[/tex]      (∵ π = 3.14)

              S = 11.304 cm

The arc length  S = 11.304 cm

Answer:

18pi/5

Step-by-step explanation:

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Answers

Answer:

65

Step-by-step explanation:

because 5 and 7 are the same angle that means the opposite of the 65 has to also be 65

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Enter the area of the circle, in square centimeters. Round your answer
to the nearest hundredth.

Answers

Answer:

113.04

Step-by-step explanation:

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Answers

answer: 9
explanation: 4 + 5 = 9

Answer:

The answer is 9 because 4+5=9

Step-by-step explanation:

The base of a prism has a perimeter of 12 centimeters and a height of 2 centimeters. The area of its base is 5 square centimeters. What is the surface area of the prism?

Answers

Answer:so multiply 12*2=24 and 24*5=120 Is your answer .

Step-by-step explanation:

is 2 a factor of 84?​

Answers

Answer:

yes

Step-by-step explanation:

Factors of 84 : 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42 and 84

29 mm

120 mm
D
What is the perimeter?
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Answers

Pythagoras theorem : a^2 + b^2 = c^2

20^2 + b^2 = 29^2

400 + b^2 = 841


841 - 400 = 441

Square root 441 = 21


PERIMETER :

21+29+20 = 70

The answer is 70

Use the Pythagorean theorem to find the missing side of the triangle!!

Answers

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brainliest??????????????????????????????

Answers

Step-by-step explanation:

Given

f(x) = 3x² + 9

g(x) = 5x

(fog)x = f ( 5x)

= 3 ( 5x) ² + 9

= 3 * 25x² + 9

= 75x² + 9

Hope it will help :)

Jamal pays $29.25 for 3 pounds of cocoa powder. Assume that the cost y, in dollars, is proportional to the amount of cocoa powder x, in pounds. find the slope

Answers

Answer:

Step-by-step :

Your answer

Your answer

9.75

Mark it as Brainlist answer. Follow me.

Mark it as Brainlist answer. Follow me.

A person on top of a lookout tower spots a fire 100meter away. The height of the tower is 60 meters. Find the angle of elevation from the fire to the person.

Answers

Answer:

30.96° to the nearest hundredth

Step-by-step explanation:

Let x = angle of elevation

tan x = 60/100 = .6

x = arctan .6

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Which does not describe slope? I will mark Brainly plz help fast

Answers

Answer:

Initial value

Step-by-step explanation:

Initial value never changes, whatsoever.

Slope is either a constant increase or decrease.

Unit rate, rate of change, and "per" all describe a rate at a certain point which is always fluctuating.

Answer:

Initial value

Step-by-step explanation:

The initial value is the y-intercept.

Which is the equation of the line that passes through the points (-4, 8) and (1, 3)?

Answers

Answer:

Step-by-step explanation:

(3 - 8)/(1 + 4)= -5/5= -1

y - 8 = -(x + 4)

y - 8 = -x - 4

y = -x + 4

Joe measured a brick using a ruler with centimeters and got 9 cm. He then measured the same brick using a ruler with millimeters and got 90 mm. Are these measurements equivalent? Why or why not?

Answers

Answer:

yes, the measures are equivalent because the formula for cm to mm is times 10. 9 times 10 is 90.

Step-by-step explanation:

hope this helps! pls mark brainliest!

During a stock clearance sale ,a pair of shoes which cost $480 was sold at a small profit of 5% what was the selling price of the pair of shoes?

Answers

the answer to the problem is- 24

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The answer should be 2.4

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Answer:

Angle ABC and angle DEF are supplementary if and only if they add up to 180 degrees

Denise has 6 hours to spend for an upcoming race. She completes her training by running full speed the distance of the race and walking back the same distance to cool down. If she runs at a speed of 7mph and walks back at a speed of 3 mph, how long should she plan to spend walking back?

Answers

To solve this problem,you need to use the formula.
d = rd (distance = rates x time)
She runs at a speed of 7 mph and walks at a speed of 3 mph.
Her distance running is d = 7tr where tr is the time she spends running Her distance walking isd = 3twwhere tw is the time she spends walking The distances are the same so7tr = 3tw We also know that the total time is 4 hourstr + tw = 4tr = 4-tw Substitute this value of tr in the first equation7tr = 3tw7(4-tw) = 3tw28-7tw = 3tw28 = 10tw2.8 = tw Denise will spend 2.8 hours (2 hours, 48 minutes) walking back and 1.2 hours (1 hour, 12 minutes running)i hope this helps:)

Answer:

She walks back for 4.2 hours

Step-by-step explanation:

Notice that we don't know the distance of the race (so let's name it "d").

She clearly would spend less time running (t1) the distance d at 7 mph, than when coming back walking (t2) at 3 mph.

But we know that the addition of both times must be 6 hours which is what she has to spend:

t1 + t2 = 6

Considering the equation that relates distance (D), time(t) , and speed (v) as:

v = D/t

we can solve for the times t1 and t2 in each trip (running vs walking){

t1 = d/7

t2 = d/3

then when we add these two equations term by term, we get:

t1 + t2 = d/7 + d/3

extract d common factor;

t1 + t2 = d (1/7 + 1/3)

replace t1 + t2 with the 6 hours:

6 = d (10/21)

multiply both sides by 21, and divide both sides by 10 to isolate d:

21 * 6 / 10 = d

d = 12.6 miles

Now knowing the distance she run and walked, we can find the time she spent walking back (t2)

t2 = 12.6 /3 = 4.2 hours

5. Which scenario matches the inequality?
3x < 12

Answers

Answer: B

Step-by-step explanation:

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