It has been calculated that the average baby uses 3528 nappies which end up in landfill sites. there were 698,512 births last year in the uk. by rounding these figures to 1 significant figures, estimate the number of nappies that will be used. give your answer in billions to 1 significant figure.

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.