1. The blood pressure readings for executives are approximately normally distributed with a mean systolic blood pressure of 134 and a standard deviation of 20 . Given this information it can be concluded that: a about \( 68 \% \) of the executives have blood pressures between \( \square \) and \( \square \) b about \( 95 \% \) of the executives have blood pressures between \( \square \) and c about \( 99.7 \% \) of the executives have blood pressures between \( \square \) and d about \( 16 \% \) of the executives have blood pressures above \( \square \) e about \( 2.5 \% \) of the executives have blood pressures below \( \square \) f about \( 0.15 \% \) of the executives have blood pressures below \( \square \) g about \( 50 \% \) of the executives have blood pressures above \( \square \).

How many college students are needed to estimate the mean grade point average of all current college students in the United Sates within 20\% percentage points with a \( 99 \% \) confidence. An earlier study gave an estimate of 0.79 for the population standard deviation. \( \mathrm{n}= \)

Find the median. \( \begin{array}{l}0.88,1.18,0.64,1.62,0.75,0.85 \\ 1.18,1.53,0.91,0.88,1.39,1.07 \\ 0.47,1.39,0.85,1.07,1.72,0.75 \\ 1.12,0.89,0.56\end{array} \)

The regression equation is \( \bar{y}=4.2 \) decimal places if necessary.) For \( x=5.8, \hat{y}=74.66 \) (Round to two decimal places if necessary.) For \( x=11.5, \hat{y}=98.6 \) The prenatal care percent for 11.5 interpolation, while the one for 5.8

Question 8 The heights of 10 -year-olds, regardless of gender, closely follow a Normal distribution with a mean of 56 inches and a standard deviation of 5 inches. a. What is the probability that a randomly chosen 10 -year-old is shorter than 48 inches? (Round to 4 decimal places.) b. If the tallest \( 10 \% \) of the class is considered "very tall", what is the height cutoff for "very tall"? (Round to 2 decimal places.) [SAB2]

Что такое диаграмма рассеяния и для чего она используется?