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densk [106]
4 years ago
9

The next two questions (Questions 7 and 8) refer to the following information: A Canadian study measuring depression level in te

ens (as reported in the Journal of Adolescence, vol. 25, 2002) randomly sampled 112 male teens and 101 female teens, and scored them on a common depression scale (higher score representing more depression). The researchers suspected that the mean depression score for male teens is higher than for female teens, and wanted to check whether data would support this hypothesis. If μ1 and μ2 represent the mean depression score for male teens and female teens respectively, which of the following is the appropriate pair of hypotheses in this case? (i) H0: μ1−μ2=0 Ha: μ1−μ2<0 (ii) H0: μ1−μ2>0 Ha: μ1−μ2=0 (iii) H0: μ1=μ2 Ha: μ1>μ2 (iv) H0: μ1−μ2=0 Ha: μ1−μ2>0 (v) Both (iii) and (iv) are correct.
Mathematics
1 answer:
Sav [38]4 years ago
6 0

Answer:

v- Both (iii) and (iv) are correct

Step-by-step explanation:

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A stock has a return of -$1.26 per day. Write and solve an equation to find the number n of days until the total return is -$10.
Sedbober [7]

Answer:

Its below

Step-by-step explanation:

The equation is 10.08 / 1.26

n = 8 days

8 0
3 years ago
What is the product? Assume x≥0.
lys-0071 [83]

The product of (√3x + √5)(√15x+2√30) assuming x ≥ 0 is 3√5x² + 6√10x + 5√3x + 10√6

<h3>What is the product of the expression?</h3>

It follows from the task content that the expression given whose product is to be evaluated is;

(√3x + √5)(√15x+2√30)

Hence, by multiplying the terms with each other accordingly; we have;

= (√45x² + 2√90x + √75x + 2√150)

= 3√5x² + 2√90x + √75x + 2√150

= 3√5x² + 2×3√10x + √75x + 2√150

= 3√5x² + 2×3√10x + 5√3x + 2√150

= 3√5x² + 2×3√10x + 5√3x + 10√6

= 3√5x² + 6√10x + 5√3x + 10√6

Ultimately, the product of the expression is; 3√5x² + 6√10x + 5√3x + 10√6

Learn more about product:

brainly.com/question/10090998

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4 0
2 years ago
A person uses about 315 calories to jog 3 miles. How many calories will be used in a 10 mile jog?
dimulka [17.4K]

Answer:

Step-by-step explanation:

315/3

3miles=315cal

1mile = 105cal

105*10=1050cal

5 0
2 years ago
Read 2 more answers
Please help me with this problem! <br> If you could please graph it that would be awesome!
tangare [24]

The graph of the function is drawn. The open circle at -1 and 4 for -2x + 3.

The complete question is attached below.

<h3>What is a piecewise function?</h3>

The function that is transformed into the number of pieces is known as piecewise function.

The piecewise function is given below.

f(x)=\left\{\begin{matrix}3x-5 & x\leq -1 \\\\-2x+3 & -1 < x < 4 \\\\2 & x\geq 4 \\\end{matrix}\right.

The graph of the function is drawn.

The open circle at -1 and 4 for -2x + 3.

More about the piecewise function link is given below.

brainly.com/question/12561612

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5 0
2 years ago
60 degrees,60 degrees,4cm Do the following conditions make a unique triangle, more than one triangle or no triangle possible?
babunello [35]

NOT NECESSARILY would a triangle be equilateral if one of its angles is 60 degrees. To be an equilateral triangle (a triangle in which all 3 sides have the same length), all 3 angles of the triangle would have to be 60°-angles; however, the triangle could be a 30°-60°-90° right triangle in which the side opposite the 30 degree angle is one-half as long as the hypotenuse, and the length of the side opposite the 60 degree angle is √3/2 as long as the hypotenuse. Another of possibly many examples would be a triangle with angles of 60°, 40°, and 80° which has opposite sides of lengths 2, 1.4845 (rounded to 4 decimal places), and 2.2743 (rounded to 4 decimal places), respectively, the last two of which were determined by using the Law of Sines: "In any triangle ABC, having sides of length a, b, and c, the following relationships are true: a/sin A = b/sin B = c/sin C."¹

5 0
3 years ago
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