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kykrilka [37]
2 years ago
6

Please help me with those 2 question!

Mathematics
1 answer:
posledela2 years ago
3 0

Answer:

1

Step-by-step explanation:

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NEED HELP FINDING SLOPE OF THE LINE
mamaluj [8]

Answer:

slope = - \frac{2}{3}

Step-by-step explanation:

calculate the slope m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (- 4, 2) and (x₂, y₂ ) = (2, - 2) ← 2 points on the line

m = \frac{-2-2}{2-(-4)} = \frac{-4}{2+4} = \frac{-4}{6} = - \frac{2}{3}

5 0
1 year ago
A simple random sample of 50 items from a population with 7 resulted in a sample mean of 35.
Vilka [71]

The 90% , 99% confidence interval for the population mean is 32.145 < \rm \mu < 35.855 and 31.093 <  \rm \mu < 36.907

<h3>What is Probability ?</h3>

Probability is the study of likeliness of an event to happen.

It is given that

Total Population = 50

Mean = 35

The confidence interval is given by

\rm CI = \mu + z \dfrac{s}{\sqrt n}

\rm \mu is the mean

z is the confidence level value

s is the standard deviation

n is the population width

(a) The 90% confidence interval for the population mean

90% \rm \alpha / 2  = 0.05

Z = 1.64

34 \rm \pm 1.64 * 8 / √50

34 \rm \pm  1.855

32.145 < \rm \mu < 35.855

(b)  The 99% confidence interval for the population mean

99% \rm \alpha / 2  = 0.005

Z=2.57

34  \rm \pm 2.57 * 8 / √50

34 \rm \pm  2.907

31.093 <  \rm \mu < 36.907

Therefore the confidence interval for population mean has been determined.

The complete question is

A simple random sample of 50 items from a population width =7  resulted in a sample mean of 35. If required, round your answers to two decimal places.

a. Provide a 90% confidence interval for the population mean

b. Provide a 99% confidence interval for the population mean

To know more about Probability

brainly.com/question/11234923

#SPJ1

8 0
2 years ago
From the following figure, find the value of ∠AOC and ∠BOC?
g100num [7]

Step-by-step explanation:

paki ayos (*ˊᗜˋ*)ᵗᑋᵃᐢᵏ ᵞᵒᵘ sa pts

8 0
2 years ago
Please check my answer!
umka21 [38]

A ) P=6n+18 where N is the number of triangles. There's always two '9's and the 6 is based on how many triangles there are.

3 0
3 years ago
Pls help i will put brainlyist if you don’t answer correctly i will report
zimovet [89]

Answer:

23.04

Step-by-step explanation:

length×width

4.8×4.8

correct me if im wrong:)

5 0
3 years ago
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