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Effectus [21]
3 years ago
7

25POINTS!!Which expression is equivalent to 3 x 5 x 5 x 5 x 5 X 5 X 5?

Mathematics
2 answers:
Fittoniya [83]3 years ago
4 0

Answer:

the solution will be 3(5)^6.......

vichka [17]3 years ago
3 0

Answer:

the third one

Step-by-step explanation:

count your factors of 5... I count 6

so the only answer that says you have a factor of 3 and 6 factors of 5 is the third one

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A student group claims that first-year students at a university must study 2.5 hours (150 minutes) per night during the school w
AlekseyPX

Answer:

We have strong evidence that on average, students study less than 150 minutes per night during the school week

Step-by-step explanation:

Normal distribution:

mean     μ₀ = 150

Sample:

Sample size    n = 272

Sample mean   x = 141

Sample standard deviation  s  = 66

The standard error of the sample mean  SE = σ /√n

SE = 66/√272

SE = 66 / 16,49

SE = 4

Test Hypothesis:

Null hypothesis                            H₀             x  =   μ₀

Alternative hypothesis                Hₐ            x <    μ₀

z(s)  test statistics is:

z(s)  =  ( x  -  μ₀ ) / s/√n

z(s) = - 9 /4

z(s) =  -  2,25

p-value  for that z(s)      p-value  = 0,0122

Then for α =  0,05 p-value < 0,05

We are in the rejection region we need to reject H₀

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3 years ago
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They drove 65 miles per hour

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