Risa is studying dating behavior of college students. She asks students at her school how many romantic partners they have had in their lifetimes and finds that the average number of romantic partners is 7.50 (s = 2.25).What percentage of college students has had fewer than 4 romantic partnersWhat would the percentile rank of someone with 8 partners be?Use attached table and draw normal distribution (A)20.000.010.020.030.040.050.060.070.080.090.100.110.120.130.14DIEPrint(B)Proportionin Body2022 5:30 PM.5000.5040.5080.5120.5160.5199.52395279.5319.5359.5398.5438.5478.5517.5557sear(C)Proportionin Tail.5000.4960.4920.4880.4840.4801.47614721168.4641.4602.4562.4522.4483.4443KADAHH(D)ProportionBetween Mean and zQ.0000.0040.0080.0120.0160.0199.0239.0279.0319.0359.0398.0438.0478.0517.0557near(A)Z0.250.260.270.280.290.300.310.320.330.340.350.360.370.380.39nin(B)Proportionin Body.5987.6026.6064.6103.6141.6179.6217.6255.6293.6331.6368.6406.6443.6480.6517A(C)Proportionin Tail.4013.3974.3936.3897.3859.3821.3783.3745.3707.3669.3632.3594.3557.3520.34833146(D)ProportionBetween Mean and z.0987.1026.1064.1103.1141.1179.1217.1255.1293.1331.1368.1406.1443.14807.15171001 vnload0.060.070.080.090.100.110.120.130.140.150.160.170.180.190.200.210.220.230.24Printed Sep 25, 2022 5:30 PM.51995239.5279.5319.5359.5398.5438.54785517.5557.5596.5636.5675.5714.5753.5793.58325871.5910.5948.4801.4761.4721.4681.4641.4602.45624522.4483.4443.4404.4364.4325.42864247.4207.4168.4129.4090.4052.0199.0239.0279.0319.0359.0398.0438.0478.0517.0557.0596.0636.06750714.07530793.0832.0871.091009480.300.310.320.330.340.350.360.370.380.390.400.410.420.430.440.450.460.470.480.49.6141.6179..6217.6255.6293.6331.6368.6406.6443.6480.6517.6554.6591.6628.6664.6700.6736.6772.6808.6844.6879.3859.3821.3783.37453707.3669.3632.3594.3557.3520.3483.3446.340933723336.3300.32643228.3192.3156.3121.114111791217.1255.1293.1331.1368.14061443.14801517.1554.1591.1628.1664.1700.1736.1772.1808.1844.1879533

Let X be the number of romantic partners follows normal distribution with mean 7.5 and standard…

Answered: Risa is studying dating behavior of…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Related questions

Question

Risa is studying dating behavior of college students. She asks students at her school how many romantic partners they have had in their lifetimes and finds that the average number of romantic partners is 7.50 (s = 2.25).
1. What percentage of college students has had fewer than 4 romantic partners
2. What would the percentile rank of someone with 8 partners be?

Use attached table and draw normal distribution

(A)
2
0.00
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
0.11
0.12
0.13
0.14
DIE
Print
(B)
Proportion
in Body
2022 5:30 PM
.5000
.5040
.5080
.5120
.5160
.5199
.5239
5279
.5319
.5359
.5398
.5438
.5478
.5517
.5557
sear
(C)
Proportion
in Tail
.5000
.4960
.4920
.4880
.4840
.4801
.4761
4721
168
.4641
.4602
.4562
.4522
.4483
.4443
KADA
HH
(D)
Proportion
Between Mean and z
Q
.0000
.0040
.0080
.0120
.0160
.0199
.0239
.0279
.0319
.0359
.0398
.0438
.0478
.0517
.0557
near
(A)
Z
0.25
0.26
0.27
0.28
0.29
0.30
0.31
0.32
0.33
0.34
0.35
0.36
0.37
0.38
0.39
nin
(B)
Proportion
in Body
.5987
.6026
.6064
.6103
.6141
.6179
.6217
.6255
.6293
.6331
.6368
.6406
.6443
.6480
.6517
A
(C)
Proportion
in Tail
.4013
.3974
.3936
.3897
.3859
.3821
.3783
.3745
.3707
.3669
.3632
.3594
.3557
.3520
.3483
3146
(D)
Proportion
Between Mean and z
.0987
.1026
.1064
.1103
.1141
.1179
.1217
.1255
.1293
.1331
.1368
.1406
.1443
.1480
7.1517
1001

vnload
0.06
0.07
0.08
0.09
0.10
0.11
0.12
0.13
0.14
0.15
0.16
0.17
0.18
0.19
0.20
0.21
0.22
0.23
0.24
Print
ed Sep 25, 2022 5:30 PM
.5199
5239
.5279
.5319
.5359
.5398
.5438
.5478
5517
.5557
.5596
.5636
.5675
.5714
.5753
.5793
.5832
5871
.5910
.5948
.4801
.4761
.4721
.4681
.4641
.4602
.4562
4522
.4483
.4443
.4404
.4364
.4325
.4286
4247
.4207
.4168
.4129
.4090
.4052
.0199
.0239
.0279
.0319
.0359
.0398
.0438
.0478
.0517
.0557
.0596
.0636
.0675
0714
.0753
0793
.0832
.0871
.0910
0948
0.30
0.31
0.32
0.33
0.34
0.35
0.36
0.37
0.38
0.39
0.40
0.41
0.42
0.43
0.44
0.45
0.46
0.47
0.48
0.49
.6141
.6179.
.6217
.6255
.6293
.6331
.6368
.6406
.6443
.6480
.6517
.6554
.6591
.6628
.6664
.6700
.6736
.6772
.6808
.6844
.6879
.3859
.3821
.3783
.3745
3707
.3669
.3632
.3594
.3557
.3520
.3483
.3446
.3409
3372
3336
.3300
.3264
3228
.3192
.3156
.3121
.1141
1179
1217
.1255
.1293
.1331
.1368
.1406
1443
.1480
1517
.1554
.1591
.1628
.1664
.1700
.1736
.1772
.1808
.1844
.1879
533

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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