Question

The distribution of the amount of money undergraduate students spend on books for a term is slightly right- skewed, with a mean of $400 and a standard deviation of $80. If a student is selected at random, what is the probability that this student spends more than $425 on books? O0.1125 00.3773 00.6227 This cannot be determined from the information given.

Answer 1

Answer:

Step-by-step explanation:

given mean = $400

standard deviation = $80

Probability that this student spends more than $425 on books:

P(X> 425) = 1 - P(X<425) = P(425-400/80)  =P(Z< 0.3125)

=1 - P(Z<0.3125)

=1 - 0.6227  = 0.3773

So, probability is 0.3773