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Dmitry [639]
3 years ago
15

PLEASE HELP ASAP.!!! ILL GIVE BRAINLIEST *EXTRA POINTS* PLEASE DONT SKIP :((

Mathematics
2 answers:
devlian [24]3 years ago
7 0

Answer:

6

Step-by-step explanation:

2 choices for pants and 3 shirts, so 2*3=6.

grandymaker [24]3 years ago
3 0

Answer:

total outfits = 6

Step-by-step explanation:

3 shirts x 2 pants

you had better give me brainliest

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5. The superintendent of the local school district claims that the children in her district are brighter, on average, than the g
anygoal [31]

Answer:

We conclude that children in district are brighter, on average, than the general population.

Step-by-step explanation:

We are given the following data set:

105, 109, 115, 112, 124, 115, 103, 110, 125, 99

Formula:

\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}  

where x_i are data points, \bar{x} is the mean and n is the number of observations.  

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

Mean =\displaystyle\frac{1117}{10} = 111.7

Sum of squares of differences = 642.1

S.D = \sqrt{\frac{642.1}{49}} = 8.44

We are given the following in the question:  

Population mean, μ = 106

Sample mean, \bar{x} = 111.7

Sample size, n = 10

Alpha, α = 0.05

Sample standard deviation, s = 8.44

First, we design the null and the alternate hypothesis

H_{0}: \mu = 106\\H_A: \mu > 106

We use one-tailed(right) t test to perform this hypothesis.

Formula:

t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }

Putting all the values, we have

t_{stat} = \displaystyle\frac{111.7 - 106}{\frac{8.44}{\sqrt{10}} } = 2.135

Now,

t_{critical} \text{ at 0.05 level of significance, 9 degree of freedom } = 1.833

Since,                  

t_{stat} > t_{critical}

We fail to accept the null hypothesis and reject it. We accept the alternate hypothesis.

We conclude that children in district are brighter, on average, than the general population.

4 0
3 years ago
Please help with the following question
sasho [114]
  We have:
  The generic equation of the line is:  y-yo = m (x-xo)
  The slope is:
  m = (y2-y1) / (x2-x1)
  m = (- 2-0) / (3-0)
  m = -2 / 3
  We choose an ordered pair
  (xo, yo) = (0, 0)
  Substituting values:
  y-0 = (- 2/3) (x-0)
  Rewriting:
  y = (- 2/3) x
  Answer:
  The equation of the line is:
  y = (- 2/3) x


5 0
3 years ago
8,392,003,830 in expanded form
zvonat [6]
8,000,000,000+300,000,000+90,000,000+
2,000,000+3,000+800+30
8 0
3 years ago
What is the slope of the line that passes through the points (2,1) and (5,6)
dlinn [17]

Answer:

5/3

Step-by-step explanation:

4 0
3 years ago
Whats a number between 1 and 50 with 8 factors.
Natasha_Volkova [10]

Answer:

30

Step-by-step explanation:

the factors are 1,2,3,5,6,10,15,30

7 0
3 years ago
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