Can someone help me please?

Using two or more complete sentences, describe how you can find a vector parallel to b=-2,3

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)