Superstitions survey. Are Americans superstitious? A Harris (Feb. 2013) poll of over 2,000 adult Americans was designed
Question:
Superstitions survey. Are Americans superstitious? A Harris (Feb. 2013) poll of over 2,000 adult Americans was designed to answer this question. One survey item concerned the phrase “see a penny, pick it up, all day long you’ll have good luck.” The poll found that just one-third of Americans (33%) believe finding and picking up a penny is good luck. Consider a random sample of 20 U.S.
adults and let x represent the number who believe finding and picking up a penny is good luck.
a. For this experiment, define the event that represents a
“success.”
b. Explain why x is (approximately) a binomial random variable.
c. Give the value of p for this binomial experiment.
d. Find P1x 6 102.
e. Find P1x = 172.
f. Find P1x 7 52.
Step by Step Answer:
Statistics Plus New Mylab Statistics With Pearson Etext Access Card Package
ISBN: 978-0134090436
13th Edition
Authors: James Mcclave ,Terry Sincich