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serious [3.7K]
3 years ago
7

Approximately 10% of all people are left-handed. Consider a grouping of fifteen people.

Mathematics
1 answer:
vaieri [72.5K]3 years ago
8 0
1.5 but you can’t get half a person
You might be interested in
Surface area=<br> Help me please thanks so much
kupik [55]

The Surface Area of the sphere is 1017.16 unit^2.

what is the surface area of the sphere?

The surface area of the sphere is 4*pi*r^2.

where, r is the radius

Calculation :

given  radius is 9 units

putting value in the formula of the sphere

S(area)=4*pi*r^2

            =4*3.14*9^2

            =4*3.14*81

            =1017.16 UNIT^2

The Surface Area of the sphere is 1017.16 unit^2.

learn more about surface area of the sphere here

brainly.com/question/16185363

#SPJ1

7 0
2 years ago
In the graph shown below, if lines 1^1 are parallel, then the slope of the line 1^2 is?
Galina-37 [17]

Answer:

<h2>Two lines are parallel if the have the same slope. Example 1: Find the slope of the line parallel to the line 4x – 5y = 12. To find the slope of this line we need to get the line into slope-intercept form (y = mx + b), which means we need to solve for y: The slope of the line 4x – 5y = 12 is m = 4/5.</h2>

Step-by-step explanation:

<h2>good morning</h2>
7 0
3 years ago
Help it’s easy but yh still need help lol
guapka [62]

Answer:

14 students walk

Step-by-step explanation:

40 total

22 girls

18 boys - 7 boys who cycle = 11 boys - 6 who take the bus. That leaves 5 boys who walk.

9 girls walk

5 + 9 = 14 total.

3 0
2 years ago
Which expression is equivalent to (3/4)^-2<br> A: -9/16<br> B: 16/9<br> C: -6/8<br> D: 9/16
UkoKoshka [18]
B is the answer B is the answer B is the answer B is the answer
7 0
3 years ago
A health psychologist knew that corporate executives in general have an average score of 2.55 with a standard deviation of 0.5 o
Mumz [18]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the following :

Population mean (μ) = 2.55

Population standard deviation (σ) = 0.5

Sample size (n) = 30

Sample mean (x) = 2.76

α = 0.05

STEP 1:

Stress score in general executive (s1)

Stress score in exercising executive (s2)

Null : s1 = s2

Alternative : s1 < s2

STEP 2:

Shape of distribution = normal

Population mean (μ) = 2.55

Population standard deviation (σ) = 0.5

Sample size (n) = 30

Sample mean (x) = 2.76

α = 0.05

Decision rule :

α = 0.05 which corresponds to a t score (t0) ;

df = n - 1 = 30 - 1= 30 at 0.05 = 1.699

If :

(Test statistic (t) > t0) ; reject the Null

(right tailed test)

Test statistic (t) :

(x - μ) / (σ/√n)

(2.76 - 2.55) / (0.5/√30)

0.21 / 0.0913

= 2.30

t > t0

2.30 > 1.699

t is more extreme than t0

Hence, reject the null at α = 0.05

7 0
3 years ago
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