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Andreyy89
3 years ago
5

Erin wants to know if warming up will help runners sprint faster. Twenty-six track and field athletes volunteered to participate

in her study. She randomly assigns 13 athletes to warm-up for 10 minutes. All 26 participants sprint the same distance. She calculates the mean for each group and determines that the mean for the warm-up group was 10.9 seconds, and the mean for the other group was 12.9 seconds. To test the difference of means she re-randomized the data 54 times, and the differences are plotted in the dot plot below. What can Erin conclude from her study? (6 points) A dot plot is shown labeled from negative 2.5 to positive 2. Above the negative 2.5 are 3 dots. Above the negative 2 are 6 dots. Above the negative 1.5 are 9 dots. Above the negative 1 are 12 dots. Above the negative 0.5 are 6 dots. Above the 0.0 are The difference in the means is not significant because a difference of 2 is not very likely. The difference in the means is not significant because a difference of 2 is very likely. The difference in the means is significant because a difference of 2 is very likely. The difference in the means is significant because a difference of 2 is not very likely.
Mathematics
1 answer:
dmitriy555 [2]3 years ago
8 0

Answer:

hope it Helps

Step-by-step explanation:

Brainliest please

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What is the answer to -3x - 6 + (-1)?​
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Find all solutions of the equation in the interval [0, 2pi).
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Begin by squaring both sides to get rid of the radical. Doing that gives you:

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8 0
3 years ago
The Cinemania theater showed 108 different movies last year. Of those, 15 movies were action movies. Based on this data, what is
natita [175]

Answer:

A reasonable estimate of the probability is equal to 0.1389   or  13.89\%

Step-by-step explanation:

we know that

The probability of an event is the ratio of the size of the event space to the size of the sample space.  

The size of the sample space is the total number of possible outcomes  

The event space is the number of outcomes in the event you are interested in.  

so  

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x------> size of the event space

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x=15

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