Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n=1077 and x = 534 who said "yes." Use a 90% confidence level. Click the icon to view a table of z scores. a) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.) b) Identify the value of the margin of error E. (Round to three decimal places as needed.) c) Construct the confidence interval: P<0 (Round to three decimal places as needed.) d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below. OA. One has 90% confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion. OB. One has 90% confidence that the sample proportion is equal to the population proportion. OC. There is a 90% chance that the true value of the population proportion will fall between the lower bound and the upper bound. O D. 90% of sample proportions will fall between the lower bound and the upper bound.
Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n=1077 and x = 534 who said "yes." Use a 90% confidence level. Click the icon to view a table of z scores. a) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.) b) Identify the value of the margin of error E. (Round to three decimal places as needed.) c) Construct the confidence interval: P<0 (Round to three decimal places as needed.) d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below. OA. One has 90% confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion. OB. One has 90% confidence that the sample proportion is equal to the population proportion. OC. There is a 90% chance that the true value of the population proportion will fall between the lower bound and the upper bound. O D. 90% of sample proportions will fall between the lower bound and the upper bound.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Transcribed Image Text:m/Student/Playerlest.aspx?test
2
PENSASTIE2232959533
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
24
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.50 and up
z
.00
5000
5398
5793
6179
6554
6915
7257
7580
7881
8159
0
с
8413
8643
8849
9032
9192
9332
9452
9554
9641
9713
9772
9821
9861
9893
2
9918
9938
9953
9965
9974
9981
9987
9990
9993
9995
9997
9999
.00
01
NOTE: For values of z above 3.49, use 0.9999 for the area.
Area
0.9500
0.9950
Cumulative Area from the LEFT
01
.03
5040
5120
5438
5517
5832
6217
.6591
.6950
7291
.7611
7910
8186
8438
8665
8869
9049
9207
9345
9463
9564
9649
9719
9778
9826
9864
9896
9920
9940
.9955
9966
9975
9982
9987
9991-
9993
9995
9997
.02
5080
5478
5871
.6255
6628
.6985
7324
.7642
7939
8212
8461
8686
8888
9066
9222
9357
9474
9573
9656
9726
9783
9830
9868
9898
.9922
.9941
9956
9967
9976
9982
"Use these common values that result from interpolation:
z Score
1.645
2.575
POSITIVE Z Scores
9987
9991
9994
9995
9997
02
5910
6293
6664
.7019
7357
.7673
.7967
8238
8485
8708
8907
9082
9236
.9370
9484
.9582
9664
9732
9788
.9834
9871
9901
9925
9943
9957
9968
9977
9983
9988
.9991
9994
9996
9997
.03
.04
5160
5557
5948
6331
6700
7054
7389
.7704
.7995
.8264
.8508
.8729
8925
.9099
9251
9382
9495
.9591
9671
9738
9793
9838
9875
9904
9927
9945
9959
.9969
9977
9984
9988
9992
.9994
9996
.9997
04
.
.05
5199
5596
5987
6368
6736
.7088
7422
.7734
8023
8289
.8531
8749
8944
9115
9265
9394
9505
.9599
9678
9744
9798
9842
9878
.9906
9929
.9946
9960
.9970
9978
9984
9989
.9992
.9994
.9996
.9997
.05
06
5239
5636
6026
6406
6772
7123
.7454
7764
8051
8315
8554
.8770
8962
9131
9279
.9406
.9515
9608
9686
.9750
.9803
9846
.9881
9909
Search or type URL
.9931
9948
9961
.9971
.9979
.9985
9989
9992
.9994
.9996
.9997
.06
.07
5279
5675
6064
6443
6808
.7157
.7486
7794
8078
8340
8577
8790
8980
9147
9292
.9418
9525
.9616
.9693
.9756
.9808
.9850
9884
.9911
9932
9949
9962
.9972
9979
9985
9989
9992
9995
9996
.9997
MacBook Pro
07
.
08
5319
5714
6103
6480
6844
7190
7517
7823
8106
8365
8599
8810
8997
9162
9306
9429
9535
9625
9699
9761
9812
9854
9887
9913
9934
9951
9963
9973
9980
9986
9990
9993 →
.9995
9996
9997
08
.09
5359
5753
6141
6517
6879
7224
7549
7852
8133
.8389
8621
8830
.9015
9177
9319
9441
9545
9633
9706
9767
9817
9857
9890
9916
9936
9952
9964
.9974
.9981
.9986
.9990
9993
9995
.9997
9998
09
Common Critical Values
Confidence Critical
Level
Value
0.90
0.95
0.99
1.645
1.96
2.575
Z
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
24
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.50 and up
Z
Transcribed Image Text:Use the sample data and confidence level given below to complete parts (a) through (d).
A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n = 1077 and x = 534 who said "yes." Use a 90% confidence level.
Click the icon to view a table of z scores.
a) Find the best point estimate of the population proportion p.
(Round to three decimal places as needed.)
b) Identify the value of the margin of error E.
(Round to three decimal places as needed.)
c) Construct the confidence interval:
(Round to three decimal places as needed.)
d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below.
OA. One has 90% confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion.
OB. One has 90% confidence that the sample proportion is equal to the population proportion.
OC. There is a 90% chance that the true value of the population proportion will fall between the lower bound and the upper bound.
OD. 90% of sample proportions will fall between the lower bound and the upper bound.
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