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tatiyna
3 years ago
6

Can someone show me the steps to this and answer

Mathematics
1 answer:
LiRa [457]3 years ago
5 0
The answer to the question

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Only a very small (<5) percentage of measurements can be more than 2 standard deviations from the mean of the normal distribu
horsena [70]

Answer:

A. True

Step-by-step explanation:

The empirical rule in statistics states that:

  • 68% of the data will be within 1 standard deviation
  • 95% of the data will be within 2 standard deviations
  • 99.7% of the data will be within 3 standard deviations

So yes, we can state that 5% or less of the data will be more than 2 standard deviations away from the mean. Of course, statistics is not 100% certain, so this rule is not 100% right all the time. Some exceptions might result, but generally speaking, the results should follow the empirical rule.

5 0
3 years ago
Read 2 more answers
A charity has received donations totaling $2370. However, this is only three-fifths of its goal.
Alinara [238K]
3,950 is your answer. See, you divide 2,370 by 3 to get 1/5 of their goal and then multiply that by 5.
8 0
3 years ago
Read 2 more answers
At his last track meet, Eli ran the 400-meter dash in 54 seconds. His friend Kimberly bet him that he couldn't run a whole kilom
Trava [24]

Answer:

Eli has to run for 2.25 minutes at this pace to win the bet.

Step-by-step explanation:

At his last track meet, Eli ran the 400-meter dash in 54 seconds.

So, the speed of Eli's run is \frac{400}{54} \times 60 = 444.44 meters per minute.

Now, if Eli is determined to run a whole kilometer with the same speed, then it will take Eli to run 1 kilometer within \frac{1000}{444.44} = 2.25 minutes.

Hence, Eli has to run for 2.25 minutes at this pace to win the bet. (Answer)

6 0
3 years ago
The school that Darryl goes to is selling tickets to a choral performance. On the first day of ticket sales the school sold 9 ad
hram777 [196]

Answer:

look at picture

Step-by-step explanation:

x: adult tickets

y: student tickets

8 0
3 years ago
Y+5=-(x+5) in standard form
swat32

1. y+5=-x-5

2. y=-x-5-5

3.y=-x-10

4. y=x-10

_______________________

1. distribute negative sign

2. move the constant to the right and change the sign

3. -5-5 equals -10, bring everything down

4. change the sign of the x to positive, the equation is in standard form

5 0
3 years ago
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