The mean gross annual incomes of certified welders are normally distributed with the mean of $26,589 and a standard deviation of $2,659. The ship building association wishes to find out whether their welders earn more or less than $26,589 annually. The alternate hypothesis is that the mean is not $26,589. Which of the following is the alternate hypothesis? a. H1: <$26,589 b. H1: -$26,589 с. HI:T-826,589 d. Hi: -326,589

And based on the claim the system of hypothesis are:

Null hypothesis:

Alternative hypothesis:

And the best alternative would be:

b.

Step-by-step explanation:

For this case we want to test the hypotheis that the true mean is different from 26859. We have the following info given:

represent the sample mean

represent the population deviation

And based on the claim the system of hypothesis are:

Null hypothesis:

Alternative hypothesis:

And the best alternative would be:

b.

answer: the answer is one of

step-by-step explanation:   we are given to write a proper fraction where the whole is divided into an even number of equal parts less than ten, and an odd number of those parts exist.

an even number less than 10 may be one of 2, 4, 6 or 8. so, the whole may be one of these four evens.

now, an odd number of these parts must exist, so the numerator must be an odd number, one of 1, 3, 5 or 7. it cannot be 9 because then the fraction will become improper.

thus, our fraction may be one of the following