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soldi70 [24.7K]
3 years ago
14

Julie knows that the adult population gets, on average, eight hours of sleep each night. A hypothesis test can help her see if c

ollege students are different from the adult population. Julie tabulated that her sample of 101 students got an average of 7.1 hours of sleep each night, with a standard deviation of 2.48. Using the data provided and the formula below, what is the t-statistic that Julie calculates
Mathematics
1 answer:
Mamont248 [21]3 years ago
6 0

Answer:

-3.64

Step-by-step explanation:

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11
emmainna [20.7K]
I think it is B because 11 is just 11 so yeah
3 0
3 years ago
How I can apply the distribute property to this question?
igor_vitrenko [27]

14 = 2•7 and 35 = 5•7, so the GCF of 14k and 35 is 7.

14k + 35 = 2•7k + 5•7 = 7 (2k + 5)

(Remember that the distributive property says a (b + c) = ab + ac.)

8 0
2 years ago
What is the slope of a line that is perpendicular to the line represented by the equation y=3/4x-1/2?
kherson [118]
The answer is:   " - (4/3) " .
____________________________________
Explanation:
____________________________________
The original equation given has a slope of (3/4).

Note:  We know this since the equation for the slope of the line is written in "slope-intercept form" ; also known as: "point-slope form";  that is:

  " y = mx + b " ;  in which "m" (the coefficient of "x") is the slope.
____________________________________________________
The slope of a line PERPENDICULAR to an equation, when written in "slope-intercept form", is the "negative reciprocal" of the slope of the original line.

Hence, the negative reciprocal of "(3/4)"  is:  "-(4/3)" .
____________________________________________________
5 0
3 years ago
Is this perpendicular, parallel, or neither?<br>y=4x+5 <br>2x+8y=16
ANEK [815]
Its perpendicular, if you need me to explain lmk
6 0
3 years ago
1. Solve the problem [(–7 + 2) + 4] – 3 = ?
Anna11 [10]

For number 3 it is D


4 0
3 years ago
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