) 3. A sample of 100 apples is taken from a load. The diameters of the apples have the following distribution Diameter (cm) 6 7 8 9 10 frequency 21 38 17 13 .1. Determine the mean and standard deviation of the diameters. (3 marks) Assuming the distribution is approximately normal with this mean and standard deviation, find the range of the size of apples for picking if 5% are rejected as too large and 5% are rejected as being too small.

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5

you probably already have the answer but anyways it's b. 15.0

step-by-step explanation:

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.

answer: it's d

step-by-step explanation: