The true average diameter of ball bearings of a certain type is supposed to be .5 in. A one-sample
t-test will be carried out to see whether this is the case. What conclusion is appropriate in each of
the following situations?
a. n = 13, t = 1.6, α = 0.05
b. n = 13, t = -1.6, α = 0.05
c. n = 25, t = -2.6, α = 0.01
d. n = 25, t = -3.9

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function.a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.

Shannon drove for 540 minutes. if she traveled 65 miles per hour,how many total miles did she travel?

Ellie spent $88.79 at the computer stote. she had $44.50 left to buy a cool hat. how much money did she originally have? write and solve an equation to answer the question.