Assume that 33.4% of people have sleepwalked. assume that in a random sample of 1459 adults, 526 have sleepwalked.

a. assuming that the rate of 33.4% is correct, find the probability that 526 or more of the 1459 adults have sleepwalked.

b. is that result of 526 or more significantly high?

c. what does the result suggest about the rate of 33.4?

Step-by-step explanation:

Given that  33.4% of people have sleepwalked.

Sample size n =1459

Sample favourable persons = 526

Sample proportion p =

Sample proportion p is normal for large samples with mean = 0.334 and

std error =

a) P(526 or more of the 1459 adults have sleepwalked.)

b) Yes, because hardly 1.4% is the probability

c) 33.4 is very less compared to the average.  Either sample should be improved representing the population or population mean should be increased accordingly.

x = 3 ± √(5+y)