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3 years ago

Hurry up!plz help I am in trouble

Mathematics

2 answers:

algol [13]3 years ago

7 0

Answer:

Step-by-step explanation:

To find the average of a collection of values, add them all up and then divide the sum by the number of values.

$25+36+20+15+24+30+38+18+32+22=260$

The sum is 260, and there are 10 values here.

$260\div10=26$

The average score is 26.

Tema [17]3 years ago

4 0

Answer:

24.2 marks

Step-by-step explanation:

25 + 36 + 20 + 15 + 24 + 30 + 38 + 32 + 22 = 242

since there are 10 students we divide 242 by 10 and get 24.2

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3 years ago

What is 3,130,649 rounded to the nearest hundred ?

Readme [11.4K]

When you need to round a number. First you need to look at the placement number that the question is asking to round to the nearest. In this case it's the nearest hundred.

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3 years ago

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4 years ago

Read 2 more answers

The average score of all pro golfers for a particular course has a mean of 70 and a standard deviation of 3.0 (Think of these as

bija089 [108]

Answer:

0.477 is the probability that the average score of the 36 golfers was between 70 and 71.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 70

Standard Deviation, σ = 3

Sample size, n = 36

Let the average score of all pro golfers follow a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(score of the 36 golfers was between 70 and 71)

$\text{Standard error of sampling} = \displaystyle\frac{\sigma}{\sqrt{n}} = \frac{3}{\sqrt{36}} = \frac{1}{2}$

$P(70 \leq x \leq 71) = P(\displaystyle\frac{70 - 70}{\frac{3}{\sqrt{36}}} \leq z \leq \displaystyle\frac{71-70}{\frac{3}{\sqrt{36}}}) = P(0 \leq z \leq 2)\\\\= P(z \leq 2) - P(z \leq 0)\\= 0.977 - 0.500 = 0.477= 47.7\%$

$P(70 \leq x \leq 71) = 47.7\%$

0.477 is the probability that the average score of the 36 golfers was between 70 and 71.

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4 years ago

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natulia [17]

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4 years ago

Hurry up!plz help I am in trouble​

Hurry up!plz help I am in trouble