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baherus [9]
4 years ago
10

Question 2 Multiple Choice worth 5 pont)

Mathematics
1 answer:
Talja [164]4 years ago
4 0

Answer:

A.The player runs 5 meters forward, and then runs 5 meters in the opposite direction.

Step-by-step explanation:

A.The player runs 5 meters forward, and then runs 5 meters in the opposite direction.

+5 -5 = 0  they will be at the same place they started

B.The player runs 5 meters forward, and then runs 6 meters in the opposite direction.

+5 -6 = -1  they will be 1 m behind where they started

C.The player runs 6 meters forward, and then runs 5 meters in the opposite direction.

+6 -5 = 1  they will be 1 m in front of where they started

D.The player runs 6 meters forward, and then runs O meters in the opposite direction.​

+6 -0 = 6  they will be 6 meters in front of where they started

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According to a survey, high school girls average 100 text messages daily (The Boston Globe, April 21, 2010). Assume the populati
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Answer:

Step-by-step explanation:

Hello!

The variable of interest is:

X: number of daily text messages a high school girl sends.

This variable has a population standard deviation of 20 text messages.

A sample of 50 high school girls is taken.

The is no information about the variable distribution, but since the sample is large enough, n ≥ 30, you can apply the Central Limit Theorem and approximate the distribution of the sample mean to normal:

X[bar]≈N(μ;δ²/n)

This way you can use an approximation of the standard normal to calculate the asked probabilities of the sample mean of daily text messages of high school girls:

Z=(X[bar]-μ)/(δ/√n)≈ N(0;1)

a.

P(X[bar]<95) = P(Z<(95-100)/(20/√50))= P(Z<-1.77)= 0.03836

b.

P(95≤X[bar]≤105)= P(X[bar]≤105)-P(X[bar]≤95)

P(Z≤(105-100)/(20/√50))-P(Z≤(95-100)/(20/√50))= P(Z≤1.77)-P(Z≤-1.77)= 0.96164-0.03836= 0.92328

I hope you have a SUPER day!

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3 years ago
What is the answer to 2 4/5+5 2/3 in simplified form
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Step-by-step explanation:

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Step-by-step explanation:

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Answer:

The scores in order from least likely to most likely is 8, 3, 4, and 5.

Step-by-step explanation:

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You will get:

2 (1/16)

3 (2/16)

4 (3/16)

5 (4/16)

6 (3/16)

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2. Given the scores from the problem, the probability of each number is 3 (2/16), 4 (3/16), 5 (4/16), and 8 (1/16).

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