S10b
Averages from Tables
Estimate for the Mean
1)
50 hippos were captured over the course of a year and weighed.
The results can be seen in the table, below.
Weight of hippo
in tonnes
Frequency
1.4 < W< 1.7
5
Work out an estimate for the mean weight of a hippo.
Give your answer to 1 decimal place.
1.7 <w< 2.0
2.0 W< 2.3
2.3 < W< 2.6
12
2.6 sw< 2.9
2.9 <W <3.2

What is the distance between point a and b

Given a normal distribution with µ =50 and σ =4, what is the probability that 5% of the values are less than what x values? between what two x values (symmetrically distributed around the mean) are 95 % of the values? instructions: show all your work as to how you have reached your answer. don’t simply state the results. show graphs where necessary.

Which situation could best be represented by this linear equation? 24x + 38y = 520 > if x represents the number of bracelets and y represents the number of rings, there were 24 more bracelets sold than rings. the total sales were $520. if x represents the number of bracelets and y represents the number of rings, there were 38 more bracelets sold than rings. the total sales were $520. if x represents the number of bracelets sold at $24 each and y represents the number of rings sold at $38 each, the total sales were $520 if x represents the number of bracelets and y represents the number of rings, there were 520 bracelets and rings sold. bracelets were $24, and rings were $38. e