The average manufacturing work week in metropolitan Chattanooga was 40.1 hours last year. It is believed that the recession has led to a reduction in the average work week. To test the validity of this belief, the hypotheses are

The null and alternative hypothesis are:

Step-by-step explanation:

If we want to test the claim that there is a reduction in the average work week, the null hypothesis should state:

- The alternative hypothesis should state the claim: there is a reduction in the average work week. This can be written as the true mean is less than 40.1

- The null hypothesis should state the oposite of the alternative hypothesis: that there is no significant reduction in the average work week. This can be written as the true mean is equal to 40.1.

Then, the null and alternative hypothesis are:

2/3x + 7 = 29

step-by-step explanation:

two thirds = 2/3

plus a number = x

at least 29 = 29

there for you should get 2/3x + 7 = 29

combine all like terms then its just a 2 step equation