II. The National Science Foundation, in a survey of 2,237 engineering graduate students who earned their PhD degrees, found that 607 were U. S. citizens; the majority (1,630) of the PhD degrees were awarded to foreign nationals. Conduct a test to determine whether the true proportion of engineering PhD degrees awarded to foreign nationals exceeds .5. Use α = .01.

Need now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

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Janice determined there were 10 possible outcomes when tossing two coins and spinning a spinner numbered 1 through 6. what is the correct number? what might have been janice's error?