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Novosadov [1.4K]
3 years ago
12

Find two consecutive even integers such that the square of the first decreased by 11 equals 5 times the second.

Mathematics
1 answer:
Dima020 [189]3 years ago
5 0
It is 45 and 67 I remember this from boating school 5 times a second in 11
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A study found that a 95% confidence interval for the mean μ of a particular population was computed from a random sample of 1200
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Answer:

95% confidence interval for the mean μ is (6,14)

The Population mean μ lies between ( 6, 14 )

Step-by-step explanation:

<u><em>Explanation</em></u>:-

Given random sample 'n' = 1200

95% confidence interval for the mean μ is determined by

        (x^{-} -Z_{\alpha } \frac{S.D}{\sqrt{n} } , x^{-} +Z_{\alpha } \frac{S.D}{\sqrt{n} } )

Level of significance = 95% 0r 0.05

Z₀.₀₅ = 1.96

   (x^{-} -Z_{\alpha } \frac{S.D}{\sqrt{n} } , x^{-} +Z_{\alpha } \frac{S.D}{\sqrt{n} } ) = 10 ± 4

Mean of the small sample = 10

95% of confidence intervals are

                         ( 10 ±4 )

                  ( 10 -4 , 10+4)

                  ( 6 , 14 )

95% confidence interval for the mean μ lies between ( 6, 14 )

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Step-by-step explanation:

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