Math Answers

In the context of choosing a "whole", explain when a "fifth" is not always equal to a "fifth". Give an example. (2)

15. Use the number line to round 73 562 to the nearest multiple of 1 000.

Find implicit differentiation of 2y+cot(xy^2)=3xy

Combination formulas

1.2. Measurement

(a) where in the world that people measured things?

(b) approximately 2 what year does this evidence date back?

(c) give details of how measuring was done in that time?

(d) where in the caps is this type of geometry covered as topic?

A particular brand of shirt comes in 12 colors, has a male size version and a female version, and comes in three sizes for each sex. How many different types of this shirt are made?

Scores of an achievement test show that it follows a normal distribution. Its mean is 79 with a

standard deviation of 8. Find the probability that students’ scores will be higher than the passing score

of 70.

Women’s heights have a mean of 63.6 inches and a standard deviation of 2.5 inches. What is the

probability that a woman will have a height of higher than 70 inches?

possible sample of size 2 which can be drawn without replacement

possible sample of size 2 which can be drawn without replacement

Random samples of size 3 are taken from a population of the numbers 3, 4,5,6, 7,8,and 9.

1. How many samples are possible? List them and compute

the mean of each sample. 2. Construct the sampling distribution of the sample means.

3. Construct the histogram of the sampling distribution of

the sample means. Describe the shape of the histogram.