Determine (a) the test statistic, (b) the degrees of freedom, (c) the critical value using , and (d) test the hypothesis at the level of significance. Outcome A B C D Observed Expected : H1: At least one of the proportions is different from the others. (a) The test statistic is nothing.

1.5%

step-by-step explanation:

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet