I. A teacher informs his computational physics class (of 500+ students) that a test was very difficult, but the grades would be curved. Scores on the test were normally distributed with a mean of 25.3 and a standard deviation of 9.Round your answers to at least one decimal place. (a) If the top 13% will receive an A, what is the minimum score to get an A? (b) If the bottom 34% will receive an F, what is the minimum score to pass the class?
I. A teacher informs his computational physics class (of 500+ students) that a test was very difficult, but the grades would be curved. Scores on the test were
(a) If the top 13% will receive an A, what is the minimum score to get an A?
(b) If the bottom 34% will receive an F, what is the minimum score to pass the class?
II. A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 134.5-cm and a standard deviation of 0.8-cm. Answer the following to the nearest tenth of a cm. Find P21, which is the length separating the shortest 21% rods from the longest 79%. P21.
III. A particular fruit's weights are normally distributed, with a mean of 205 grams and a standard deviation of 26 grams. The heaviest 16% of fruits weigh more than how many grams?
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