# Question 19 of 20 10 10 points a drug is reported to

• 60
• 97% (170) 165 out of 170 people found this document helpful

This preview shows page 21 - 28 out of 60 pages.

Question 19 of 20 1.0/ 1.0 Points A drug is reported to benefit 40% of the patients who take it. If 6 patients take the drug, what is the probability that 4 or more patients will benefit? A. 0.179 B.
0.862 C. 0.667 D. 0.138 Answer Key: A Feedback: P(x 4) = 1 - P(x 3), in Excel =1-BINOM.DIST(3,6,0.4,TRUE) Question 20 of 20 1.0/ 1.0 Points Three cards are drawn from a deck without replacement. What is the probability that all three cards are clubs?
B. 0.0156 C. 0.2575 D. 0.0145 Answer Key: A Feedback: 13 cubs out of a standard 52 card deck =(13/52)*(12/51)*(11/50) It is known that 50% of adult workers have a high school diploma. If a random sample of 5 adult workers is selected, what is the probability that more than 3 of them have a high school
Question 2 of 20 1.0/ 1.0 Points
If random variable X has a binomial distribution with n =10 and P(success) = p =0.6, find the
Question 3 of 20 0.0/ 1.0 Points Suppose a random variable, x, arises from a binomial experiment. If n = 14, and p = 0.13, find
Question 4 of 20 1.0/ 1.0 Points Approximately 8% of all people have blue eyes. Out of a random sample of 20 people, what is the probability that at most 2 of them have blue eyes? Round answer to 4 decimal places.
=BINOM.DIST(2,20,0.08,TRUE) Question 5 of 20 1.0/ 1.0 Points Approximately 8% of all people have blue eyes. Out of a random sample of 20 people, what is
Part 2 of 6 - Contingency Table Knowledge Check Practice 1.0/ 1.0 Points Question 6 of 20 1.0/ 1.0 Points The table shows a random sample of musicians and how they learned to play their instruments. Gender Self-Taught Studied in School Private Instruction Total Female 12 38 22 72 Male 19 24 15 58 Total 31 62 37 130 Find P (musician is a female AND had private instruction).
Answer Key: A Feedback: 22/130 Part 3 of 6 - Counting Principle Knowledge Check Practice 3.0/ 3.0 Points Question 7 of 20 1.0/ 1.0 Points A baseball team has a 20-person roster. A batting order has nine people. How many different batting orders are there? Answer:
A. 60949324800 B. 670442572800 C. 362880 D. 7257600
Answer Key: A Feedback: Order Matters =PERMUT(20,9)
• • • 