Hypothesis Testing-Means and Proportions Write all of the 4 of the steps for each of the tests below.
1. A principal at a school is worries that his students are below average intelligence. A random sample of 30
students' IQ scores has a mean of 96. Given that IQ scores are Normally distributed with a mean of 100
and standard deviation of 15, is there sufficient evidence to support the principal's claim? Test the claim at
5% significance level.

answer: can you me with homework?

step-by-step explanation:

c.35

step-by-step explanation:

8+13=21

21+8=29

29+6=35

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."