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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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Step by step explanation:
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To lower his insurance rates, Damon increases his deductible from $240 to $360. What is the precent increase in his deductible?
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Shania had $20 to spend on seven raffle tickets. After buying them she had $6. How much did each raffle ticket cost?
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Total money Shania was having = $20.

After buying raffle tickets she was having a total of $6.

Thus ,

The money she spent on the raffle tickets = Money she was having initially -

                                                                         Money she was having after

                                                                         purchasing tickets .

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Thus , each ticket costs $2 for Shania.

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