A survey of 700 non-fatal accidents showed that 143 involved ...

[scienceeasy]

A survey of 700 non-fatal accidents showed that 143 involved faulty equipment. Find a point estimate for p, the population proportion of accidents that involved faulty equipment.
 
  A) 0.204 B) 0.796 C) 0.257 D) 0.170

Question 2

A recent survey found that 69 of all adults over 50 wear sunglasses for driving. In a random sample of 20 adults over 50, what is the mean and standard deviation of those that wear sunglasses?
 
  A) mean: 13.8; standard deviation: 2.06833266 B) mean: 13.8; standard deviation: 3.71483512
  C) mean: 6.2; standard deviation: 2.06833266 D) mean: 6.2; standard deviation: 3.71483512

[mfedorka]

Answer to Question 1

A

Answer to Question 2

A

[scienceeasy]

Gracias!

[essyface1]

Excellent