Gallons of milk- \( 24.6,23.84,25.25,21,17.52,19.61,19.83,26.18,34.97 \), \( 29.9,28.59,20.57,26.94,27.24 \) At \( \boldsymbol{\alpha}=\mathbf{0 . 0 5} \), test for a significant difference by completing the following. Calculate the value of the test statistic ( 2 decimals). What is the p-value?

Use the technique of linear regression to find the line of best fit for the given points. Round any intermediate calculations to no less than six decimal places, and round the coefficients to two decimal places. Answer \( (1,10),(2,6),(3,3),(4,10),(5,4),(6,3),(7,2) \)

If a scatter plot shows points that are closely clustered together, what can you infer about the correlation between the variables?

What is the mean of the prime numbers greater than 30 but less than 45 ?

ما هو الرسم البياني Scatter Plot وكيف يُستخدم لتمثيل البيانات؟

4. O diretor de uma escola, na qual estăo ma- triculados 280 meninos e 320 meninas, de- sejoso de conhecer as condiçőes de vida extraescolar de seus alunos e não dispondo de tempo para entrevistar todas as famílias, resolveu fazer um levantamento, por amos- tragem, em 10\% dessa clientela. Obtenha, para esse diretor, os elementos componen- tes da amostra.