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NISA [10]
3 years ago
8

The Ecology Club is electing officers for the new school year. The club will elect a president, vice-president, secretary and tr

easurer. There are 24 members of the club, and all members are eligible to hold any office. No member can hold more than one office. In how many ways can the club select its new officers? A. State whether the problem involves a permutation or a combination. B. Evaluate the answer. Do both A & B.
Mathematics
1 answer:
AlladinOne [14]3 years ago
8 0
Bsjs s js sis js sh jss is ska ai sja sus sis sus sj sha
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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.

8 0
4 years ago
how does the number of zeros in the product of 8 and 5,000 compared to the number of zeros in the factors?
Mars2501 [29]
5,000 Contains 0's up until the Hundreds value while (8*5000) 40,000 Contains 0's up until the Thousands value.
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4 years ago
(3.2 * 10000000) -3
andreev551 [17]

The exponents distribute over factors:

(ab)^c = a^c \times b^c

so, you have

(3.2 \times 10^6)^{-3} = 3.2^{-3} \times (10^6)^{-3}

Let's focus on each factor: applying the definition of negative exponents, you have

3.2^{-3} = \cfrac{1}{3.2^3} \approx 0.03

While for the power of 10, you can use the following rule

(a^b)^c = a^{bc} to write

(10^6)^{-3} = 10^{6\cdot (-3)} = 10^{-18}

So, the expression evaluates to

0.03\times 10^{-18} = 3\times 10^{-20}

3 0
4 years ago
(Trig)A Ferris wheel with a diameter of 90 meters rotates at a rate of 3 minutes per revolution. Riders board the Ferris wheel 3
Karo-lina-s [1.5K]

Answer:

Step-by-step explanation:

8 0
3 years ago
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A rectangle is 3m long and 2050 m wide find it perimeter​
stellarik [79]
3+3+2050+2050=4106

4106
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