A- Of the people who dont have a sister, one has a brother
B- Of the people that have a sister, one of them also has a brother
C- Of all the people surveyed, 2 have brothers
D- of the two people that have brothers, one has sisters

What is this inequality notation? t is less then or equal to 2

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. wind speeds below 1000 cm/sec deposit sand and wind speeds above 1000 cm/sec move sand to new locations. the cyclic nature of wind and moving sand determines the shape and location of large dunes. at a test site, the prevailing direction of the wind did not change noticeably. however, the velocity did change. fifty-nine wind speed readings gave an average velocity of x = 1075 cm/sec. based on long-term experience, σ can be assumed to be 245 cm/sec. (a) find a 95% confidence interval for the population mean wind speed at this site. (round your answers to the nearest whole number.) lower limit cm/sec upper limit cm/sec