11
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
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Question
11
Transcribed Image Text:After peering into a wishing well, Jocelyn hypothesizes that the distribution of coins is 50% quarters, 20% dimes,
20% nickels, and 10% pennies. To investigate this claim, she reaches in, mixes the coins well, and selects a random
sample of 80 coins. She counts how many coins there are of each type. She would like to know if her observed
distribution provides convincing evidence that the true distribution of coins in the well is different from what she
originally thought. What are the appropriate hypotheses?
= 0.2, pnickel = 0.2,
= 0.1
Ppenny
=0.5, Pdim e
Ho: Pquarter
H: Not all of the p,s are as stated.
O Ho: Not all of the p,s are as stated.
Hoi Pquarter
= 0.1
= 0.5, pdime =0.2, Pnickel = 0.2, Ppenny
= 40, Pdime
=16, Pnickel
z 16.
78
Ppenny
Ho: Pquarter
Ho: Pquarter = 40, Pdime = 16, Pnickel = 16, Ppenny =8
= 16.
= 16, Pnickel
= 8
Ppenny
# 16, Ppenny
= 40, Pdime
o Ho: Pquarter
Hoi Pquarter
= 40, p dime 16, Pnickel
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