Question

The lengths of the eggs of a species of bird are roughly normally distributed, with a mean of 33 mm and an SD of 1.2 mm.

Approximately 50% of the eggs have lengths in the range 33 mm plus or minus ____________ mm.
pl tell me

Answer 1

mean = average

SD = standard deviation.
SD = how much we are usually off by.

Answer 2

50 %

Answer 3

@sunny17
?

Answer 4

alll

Answer 5

A large number of children were surveyed. The table below shows the distribution of the time they spent watching TV in the week before the survey. Intervals include the left endpoint but not the right. You can assume that the times are uniformly distributed within each interval. The table is used to draw a histogram of the distribution.

time (hours) percent
0-4 28
4-8 36
8-12 13
12-20 13
20-28 10


Find the height of the bar over interval 12-20, in percent per hour. Please do not enter units of measurement.

please help me sir

Answer 6

pl