One study of grand juries in Alameda County, California, compared the demographic characteristics of jurors with the general population, to see if the jury panels were representative.8 The results for age are shown below. The investigators wanted to know whether these 66 jurors were selected at random from the population of Alameda County. (Only persons 21 and over are considered; the county age distribution is known from Public Health Department data.) Fill out the last column below. All of your answers hould be accurate to the tenth digit, for example 4.8. Age County-wide percentage number of jurors expected number of jurors 21 to 40 42 5 41 to 50 23 9 51 to 60 16 19 61 and over 19 33 e 550 100 66 The value of x2 is Your answer should be an integer with no decimals. The degrees of freedom is Check that the p-value is essentially zero from the table. (True or False) With simple random sampling, it is almost impossible for a jury to differ this much from the county age distribution. The inference is that grand juries are not selected at random. Write true or false.
One study of grand juries in Alameda County, California, compared the demographic characteristics of jurors with the general population, to see if the jury panels were representative.8 The results for age are shown below. The investigators wanted to know whether these 66 jurors were selected at random from the population of Alameda County. (Only persons 21 and over are considered; the county age distribution is known from Public Health Department data.) Fill out the last column below. All of your answers hould be accurate to the tenth digit, for example 4.8. Age County-wide percentage number of jurors expected number of jurors 21 to 40 42 5 41 to 50 23 9 51 to 60 16 19 61 and over 19 33 e 550 100 66 The value of x2 is Your answer should be an integer with no decimals. The degrees of freedom is Check that the p-value is essentially zero from the table. (True or False) With simple random sampling, it is almost impossible for a jury to differ this much from the county age distribution. The inference is that grand juries are not selected at random. Write true or false.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 7PPS
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Transcribed Image Text:One study of grand juries in Alameda County, California, compared the demographic characteristics of jurors with the general
population, to see if the jury panels were representative.8 The results for age are shown below. The investigators wanted to know
whether these 66 jurors were selected at random from the population of Alameda County. (Only persons 21 and over are considered;
the county age distribution is known from Public Health Department data.)
Fill out the last column below. All of your answers hould be accurate to the tenth digit, for example 4.8.
Age
County-wide percentage
number of jurors
expected number of jurors
21 to 40
42
5
41 to 50
23
51 to 60
16
19
61 and over
19
33
Page 550
100
66
The value of x2 is
Your answer should be an integer with no decimals.
The degrees of freedom is
Check that the p-value is essentially zero from the table.
(True or False) With simple random sampling, it is almost impossible for a jury to differ this much from the county age distribution. The
inference is that grand juries are not selected at random. Write true or false.
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