Mathematics: Jasmine bakes 1/3 of a batch of cookies in 15 min. if she continues to cook at a constant rate, how many batches of cookies will she cook in a full hour? ? plz write a proportion

Jasmine bakes 1/3 of a batch of cookies in 15 min.

jtamika31

30.08.2021

95% of the lower confidence interval for the true average proportional limit stress of all such joints

7.7829

95% of the confidence interval for the true average proportional limit stress of all such joints

(7.7829, 9.3171)

Step-by-step explanation:

Step(i):-

Given that the sample size 'n' = 12

Mean of the sample = 8.55

The standard deviation of the sample (S) = 0.76

Step(ii):-

95% of the confidence interval is determined by

$(x^{-} - t_{\frac{\alpha }{2} } \frac{S}{\sqrt{n} } , x^{-} + t_{\frac{\alpha }{2} } \frac{S}{\sqrt{n} })$

Degrees of freedom = n-1 = 12-1 = 11

t₀.₀₂₅ = 3.4966

$(8.55 - 3.4966\frac{0.76}{\sqrt{12} } , 8.55 + 3.4966 \frac{0.76}{\sqrt{12} })$

(8.55 - 0.7671 , 8.55+0.7671)

(7.7829, 9.3171)

Final -

95% of the confidence interval for the true average proportional limit stress of all such joints

(7.7829, 9.3171)

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