Under what conditions can the t-distribution be correctly employed to test the difference between two population means?

The box plots show the average speeds, in miles per hour, for the race cars in two different races. Average Speeds of Cars in Race A 120 125 130 135 140 145 150 155 160 165 170 Average Speeds of Cars in Race B One-half of cars travel at which speeds?

What is 35/50 simplified

1. 2cos I - 2x + 43 cos4x = 4 cos x-1 2. 4 sin + cos + 3 = 4cos cos) 3. 2cos2x+3cosx=2cos3x = 4sinx sin 2x 4. 2 + 3 (sin 2x-3sin x = cos 2x+3cosx 5. 2cos^x+2/3 sin x cosx+1=3 (sin x + V3 cos x)

15/5 as a mixed number

Find the area and the circumference of a circle with radius 3ft Use the Value 3.14

Describe two real life situations that uses parallel lines?

At many golf clubs, a teaching professional provides a free 10-minute lesson to new customers. A golf magazine reports that golf facilities that provide these free lessons gain, on average, $1 comma 700 in green fees, lessons, or equipment

Multiply 8 by the sum of 4 and 2

Which two numbers add up to - 11 that multiply to - 432?

Ou are having a family-barbeque. In attendance are a grandfather, a grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one father-in-law, one mother-in-law and one