Mrs Hassan gave her Year 8 class a test on Friday. The highest possible mark for the test was 10.
The results are shown below.
20
a) How many pupils scored more
than 7 in the test?
15
b) How many pupils are there in
Mrs Hassan's Year 8 class?
Number of pupils
010
5
c) What assumption have you
made in answering part b)?
LI
0 1 2 3 4
5 6 7 8 9
10 Test mark

Arunning track in the shape of an oval is shown. the ends of the track form semicircles. a running track is shown. the left and right edges of the track are identical curves. the top and bottom edges of the track are straight lines. the track has width 56 m and length of one straight edge 130 m. what is the perimeter of the inside of the track? (π = 3.14) 260.00 m 347.92 m 372.00 m 435.84 m

Let the mean of the population be 38 instances of from 6" - 9" hatchings per nest, and let the standard deviation of the mean be 3. what sample mean would have a confidence level of 95% or a 2.5% margin of error?

What expression is equivalent to 42x-56y