A waiter believes the distribution of his tips has a model that is slightly skewed to the right, with a mean of \( \$ 8.10 \) and a standard deviation of \( \$ 4.10 \). He usually waits on about 40 parties over a weekend of work. a) Estimate the probability that he will earn at least \( \$ 350 \). b) How much does he earn on the best \( 1 \% \) of such weekends? a) \( P( \) tips from 40 parties \( >\$ 350)=\square \) (Round to four decimal places as needed.)

Classe dans l'ordre chronologique les différents événements. ...... M. Dursley dort devan fla porte pour empêcher Harry de róruner son courrier

\begin{tabular}{l} Use the correct Math \\ Criteria \\ \hline Used correct Jls \\ \hline Lines ar. \\ \hline\end{tabular}

Which one of the following hypotheses is/are valid? 1. \( H_{0}: \mu \leq 100 ; H_{1}: \mu \geq 100 \) 2. \( H_{0}: \mu=120 ; H_{1}: \mu \neq 120 \) 3. \( H_{0}: \mu \neq 130 ; H_{1}: \mu=130 \) 4. \( H_{0}: \bar{X} \leq 210 ; H_{1}: \bar{X}>210 \) 5. \( H_{0}: p \neq 0.42 ; H_{1}: p=0.42 \)

Recopie et complète chacun a. Si \( O O^{\prime}=6: r=4 \) et \( r^{\prime}=2 \) alors ces deux cercles sont.........

32. If \( x \) and \( y \) are two positive numbers such that A. \( x>y \) B. \( y>1 \) C. \( x a n d y \) are both less than 1 D. \( x>1 \) E. \( x \) and \( y \) are both greater than 1