Reference no: EM13243337
Automobile racing, high-performance driving schools, and driver education programs run by automobile clubs continue to grow in popularity. All these activities require the participant to wear a helmet that is certified by the Snell Memorial Foundation, a not-for-profit organization dedicated to research, education, testing, and development of helmet safety standards. Snell "SA" (Sports Application) rated professional helmets are designed for auto racing and provide extreme impact resistance and high fire protection. One of the key factors in selecting a helmet is weight, since lower weight helmets tend to place less stress on the neck. The following data show the weight and price for 18 SA helmets.
Helmet Weight(oz) Price ($)
Pyrotect Pro Airflow 64 248
Protect Pro airflow Graphics 64 278
Rci Full Face 64 200
RaceQuip RidgeLine 64 200
HJC AR-10 58 300
HJC Si-12 47 700
HJC HX-10 49 900
Impact Racing Super Sport 59 340
Zamp FSA-1 66 199
Zamp RZ-2 58 299
Zamp RZ-2 Ferrari 58 299
Zamp RZ-3 Sport 52 479
Zamp RZ-3 Sport Painted 52 479
Bell M2 63 369
Bell M4 62 369
Bell M4 Pro 54 559
G Force Pro Force 1 63 250
G Force Pro Force 1 Grafx 63 280
A) Develop a scatter diagram with weight as the dependent variable.
B) Does there appear to be any relationship between these two variables?
C) Develop the estimated regression equation that could be used to predict the price given the weight.
D) Test for the significance of the relationship at the .05 level of significance.
E) Did the estimated regression equation provide a good fit? Explain.
Find the work w done by the force
: A Force F= (6xi+ 5yj), where F is in newtons and x and y are in meters, acts on an object as the object moves in the x direction, Find the work W = integral (F · d vector r) done by the force on the object
|
Define decay to one-sixteenth of the initial value
: A radioactive element has a half-life of 2.2 hours. How many hours will it take for the number of atoms present to decay to one-sixteenth of the initial value? Show your calculations please.
|
In islam the religious hierarchy
: In Islam the religious hierarchy
|
Explain evidence of damage to the ozone layer
: Because of increasing evidence of damage to the ozone layer, chlorofluorocarbon (CFC) production was banned in 1996. However, there are about 100 million auto air conditioners that still use CFC-12 (CF2Cl2). These air conditioners are recharged fr..
|
Develop a scatter diagram with weight
: Develop a scatter diagram with weight as the dependent variable and develop the estimated regression equation that could be used to predict the price given the weight.
|
Cardinal principles find fault with stream western societies
: In what ways did Mussolini, Hitler, and the authors of Cardinal Principles find fault with mainstream Western societies and their political and social values?
|
How much heat is developed per hour
: A 115 V electric iron draws 5.57 A of current. How much heat is developed per hour, What is the temperature of the bath
|
Define increased concentration of certain gases
: Global warming refers to the rise in average global temperature due to the increased concentration of certain gases, called greenhouse gases, in our atmosphere.
|
Was there any alternative to cold war policy
: Was there any alternative to a "Cold War" policy? Could there have been any kind of peaceful coexistence early on, given the volatility of the situation following WWII?
|