Astatistician believes that the standard deviation of the weights of firemen is less than 25 pounds. a sample of 20 firemen had a standard deviation of 23.2 pounds. assume that the variable is normally distributed witha = 0.05 .what is the critical value? a) 31.410b) 30.144c) 10.851d) 10.117

What is the nth term rule of the linear sequence below? 27 , 25 , 23 , 21 , 19 , . .

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

As part of an annual fundraiser to raise money for diabetes research, diane joined a bikeathon. the track she biked on was 1,920 yards long. diane biked 38.5 laps. her sponsors agreed to donate an amount of money for each mile she biked. how many miles did she bike? first fill in the blanks on the left side using the ratios shown. then write your answer. given ratios: 5280ft / 1 mi , 1 mi /5280 ft , 1,920 yards / 1 lap , 1 lap / 1,920 yards , 3 ft / 1 yard , 1 yard / 3 ft. blanks: 38.5 laps / 1 yard x (blank) x (blank) x (blank) = (blank) miles i'm really confused on how to do this, and the explanations aren't exactly . if you could walk me through how to do this, it would be greatly appreciated.