A new type of crank for bicycles called the Powercam relies on a pushing motion rather than a circular motion. The company that markets this crank plans a test of five riders who will travel a 100-mile route once with the Powercam and once with a convetional crank. The company claims that the new crank reduces the time needed to cover the 100 miles. The times in hours for the five riders are as follows: 1 4.4 4.6 4.7 4.8 4.9 Rider 2 3 4 5 Powercam Conventional 5.1 5.3 5.1 4.9 5.2 Is there sufficient evidence in the data to support the claim that the new crank reduces the time needed to cover the 100 miles? Use a 5% significance level and assume that both population distributions are normal.

A. 65 mphB. 70.2 mphC. 82.6 mphD. 85.4 mph

A map of Levi’s trip is being made with a scale of 2 centimeters : 30 miles. How many centimeters will a 315 mile trip be on his map?

A scale was used to convert the actual height of a roller coaster track to the height shown in the picture below. The actual height of the track is 66 meters. Which scale could have been used to determine the height of the track in the picture? A. 1 cm = 66 m  B. 1 cm = 33 m C. 1 cm = 11 m D. 1 cm = 6 m

A group of students measured their weight during P.E  .Austin weighs 78.8 pounds .Katie weighs 0.5 more than Austin .Mario weighs 1.35 pounds how many pounds do Katie and Mario weigh combined

C. 314 d. 348 4. Ginise bought two pieces of wood in lengths of 72 inches and 104 inches. She needs to cut the wood into pieces of equal length. What is the greatest possible length of the pieces?   Please don't handwriting solution

En7x3=D17,144 3. A company designs a billboard to advertise their grand opening. They used a scale of 1 in. : 10 ft. What would be the dimensions of the billboard in the drawing if they use a scale of 2 in. : 25 ft instead? 10 in. 36 8 in. 20 Copyright © by Pearson Educatio

Perform an experiment of dropping a pencil/ballpoint at a specific target on the floor. Identify which height and orientation is closest to the target point by measuring the distance (cm) of the dropped object to the target. Use below data for the different levels for the two factors: Factor A: Height | Factor B: Orientation Low Level 4 ft vertical High Level 5 ft horizontal

Samantha is estimating the width of a lake. She stands at point B and looks through a long-range scope. She sees a boat shed at point A that is about 9 miles away and a tall tree at point C that is about 7 miles away. Which of the following is closest to the distance, in miles, across the lake from point A to point C?         12.9         9.7         10.6         11.4

Tyler looks at a map on his phone. He zooms in until the map scale for cenimeters to kilometers 0.3:1/5. How many cenimeters does this map use to show 1 kilometer?