A shirt is regularly priced at $42. It is on sale for 15% off. What is the discount?
2 answers:
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Answer:
a) P=0.2861
b) P=0.0954
c) P=0.3815
d) P=0.6185
Step-by-step explanation:
The question is incomplete:
<em>Among the N=16 students taking a graduate statistics class, A=10 are master students and the other N-A=6 are doctorial students. A random sample of n=5 students is going to be selected to work on a class project. Use X to denote the number of master students in the sample. Keep at least 4 decimal digits if the result has more decimal digits. </em>
<em> </em>
<em>a) The probability that exactly 4 master students are in the sample is closest to? </em>
<em> b) The probability that all 5 students in the sample are master students is closest to? </em>
<em> c) The probability that at least 4 students in the sample are master students is closest to? </em>
<em> d) The probability that at most 3 students in the sample are master students is closest to?</em>
<em />
We use a binomial distribution with n=5, with p=10/16=0.625 (proportion of master students).
a)
b)
c)
d)