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masya89 [10]
3 years ago
5

Thirty students in a science class each perform the same experiment that involves measuring the temperature of a solution. Which

will provide the most valid inference about the temperature of the solution?
averaging the temperatures measured by the six students with the highest scores on the last science test
averaging the temperatures measured by five students who always work together as a lab team
с
averaging the temperatures measured by five class members whose names were picked from a stack of shuffled cards
D
averaging the temperatures measured by the first six class members who enter the classroom the day after the experiment
Mathematics
1 answer:
marshall27 [118]3 years ago
7 0

Answer:

the answer to you question is C

Step-by-step explanation:

if this helps lmk and have a brilliant day :D

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Answer:

a) The probability of sampling at random a fish that is smaller in size than the value you would obtain by subtracting half the standard deviation from the average is 0.3085.

b) The probability of sampling at random a fish that is greater in size than the value you would obtain by adding half the standard deviation from the average is 0.3085.

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Step-by-step explanation:

For the given data set mean (\mu) = 5.75913

Standard deviation (\sigma) = 0.172229

Variance (\sigma2) = 0.0296

Here we get is

a)

P(x < \mu - \sigma/2) = p(x < 5.673) \\\\          = 0.3085

b)

P(x < \mu + \sigma/2) = p(x < 5.845) \\\\= 0.3085

c)

P(\mu - \sigma/2 < x < \mu + \sigma/2) = p(5.673 < x < 5.845) \\\\= 0.383

d)

25th percentile:-

= 25*[(n+1)/100]th term \\\\= 5.69

75the percentile:-

= 75*[(n+1)/100]th term\\\\ = 5.87

e)  

p(x < \mu - \sigma/3) = p(x < 5.7017) \\\\= 0.3707

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