Suppose that the average weekly wage for mothers just off welfare in the united states is $300. a random sample of 60 welfare mothers is given an assertiveness training class. one year later their average earnings are $330 with s=$85. do these data provide sufficient evidence at the 5% significance level to infer that assertiveness training is effective in welfare mothers negotiate better wages?

Yes, data provide sufficient evidence . And the pvalue is less than 0.05

Explanation:

Solution:

The correct option is c. Yes, the p-value is less than .05

Explanation:

The null and alternative hypothesis is:

H0 μ = 300

H1 :μ> 300

The test statistic is:

1-40 40 2.73 330-300 - -2.73

p-value = P(t > 2.73)

Using the excel below function, we have:

=TDIST(2.73, 59, 1) = 0.0042

2.73 is the test statistic and 59 is the degrees of freedom and 1 stand for a one-tailed test

Therefore the p-value is:

p-value = P(t > 2.73) = 0.0042

1   all nations face the problem of scarcity because there are limited resources and unlimited wants. nations do not have enough factors of production to produce everything that their population wants. entrepreneurial resources initiate businesses to make new goods and services; labor resources produce goods and services.

2 there are four factors of production: natural resources, labor resources, capital resources, and entrepreneurial resources. natural resources are raw materials from nature that are used to produce goods. trees, water, and grains are natural resources. some natural resources, such as wheat and cattle, are renewable

3 wants

things that you do not need to have in order to survive, but would like to have

needs

things that you must have in order to survive

goods

physical products

services

tasks that a business perform for customers

resources

items that people can use to make or obtain what they need or want

determine

to settle or decide by choice of alternatives or possiblities

4 i really dont know