It is suggested by college mathematics instructors that students spend 2 hours outside class studying for every hour in class. So, for a 4-credit-hour math class, students should sp least 8 hours (480 minutes) studying each week. The given data represent the time spent on task recorded (in minutes) for randomly selected students during the third week of the semester. Determine if the evidence suggests students may not, in fact, be following the advice. That is, does the evidence suggest students are studying less than 480 minutes each week? Use x = 0.05 level of significance. Note: A normal probability plot and boxplot indicate that the data come from a population that is normally distributed with no outliers. Complete parts (a) through (e) below. Click here to view the time spent on task data. Click here to view a table of critical t-values.
It is suggested by college mathematics instructors that students spend 2 hours outside class studying for every hour in class. So, for a 4-credit-hour math class, students should sp least 8 hours (480 minutes) studying each week. The given data represent the time spent on task recorded (in minutes) for randomly selected students during the third week of the semester. Determine if the evidence suggests students may not, in fact, be following the advice. That is, does the evidence suggest students are studying less than 480 minutes each week? Use x = 0.05 level of significance. Note: A normal probability plot and boxplot indicate that the data come from a population that is normally distributed with no outliers. Complete parts (a) through (e) below. Click here to view the time spent on task data. Click here to view a table of critical t-values.
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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Transcribed Image Text:Table of Critical t-Values
12345678910 112151671912092980
Degrees of
Freedom 0.25
13
14
23
24
32
33
2
t-Distribution
Area in Right Tail
0.20 0.15
0.05 0.025 0.02
1.000 1.376 1.963
3.078 6.314 12.706 15.894
0.816 1.061 1.386 1.886 2.920
4.303
4.849
0.765 0.978 1.250 1.638 2.353 3.182 3.482
0.741 0.941 1.190 1.533 2.132 2.776
2.999
0.727 0.920 1.156 1.476 2.015 2.571 2.757
0.718 0.906 1.134 1.440 1.943
2.447
2.612 3.143 3.707
0.711 0.896 1.119 1.415 1.895 2.365 2.517 2.998 3.499
0.706 0.889 1.108 1.397
1.860 2.306 2.449 2.896 3.355
0.703 0.883 1.100 1.383 1.833
2.398 2.821
1.093 1.372
2.262
3.250
1.812
2.228
2.359
3.169
0.700. 0.879
0.876
2.764
2.328 2.718
0.697
1.796
2.201
0.695 0.873
2.179 2.303 2.681
0.694 0.870
1.088 1.363
1.083
1.356
1.782
1.079 1.350 1.771 2.160 2.282 2.650
1.076 1.345 1.761 2.145 2.264 2.624
1.074
1.753
1.337
1.746
1.333 1.740 2.110
1.330 1.734 2.101
1.328 1.729
1.341
2.131 2.249
1.067
1.066
1.064 1.325 1.725
2.567 2.898
2.552 2.878
2.539 2.861
2.528 2.845
2.093
2.086
2.120 2.235 2.583 2.921
2.224
2.214
2.205
2.197
1.063 1.323 1.721 2.080
2.189 2.518 2.831
1.061 1.321 1.717 2.074 2.183
2.508 2.819
1.060 1.319 1.714 2.069 2.177 2.500 2.807
1.059 1.318 1.711 2.064 2.172 2.492 2.797
1.058 1.316 1.708 2.060 2.167 2.485 2.787
1.706 2.056 2.162 2.479 2.779
1.703 2.052 2.158 2.473 2.771
1.701 2.048 2.154 2.467 2.763
1.699 2.045 2.150 2.462
2.756
1.697 2.042 2.147 2.457 2.750
1.696 2.040 2.144 2.453 2.744
1.694 2.037 2.141 2.449 2.738
1.692 2.035 2.138 2.445 2.733
2.022
1.601
2136
2.728
0.692 0.868
0.691 0.866
0.690
0.865
0.863
0.688 0.862
0.861
0.686
0.860
0.859
0.686 0.858
0.685 0.858
0.685 0.857
0.856
0.684
0.689
0.688
0.687
Area in
right tail
0.684
0.684
0.856
1.315
0.855
1.314
0.855
1.056 1.313
0.854 1.055 1.311
0.854 1.055 1.310
0.682 0.853 1.054 1.309
0.682 0.853 1.054 1.309
0.682 0.853 1.053 1.308
0852 1.052 1307
0.682
0.683
0.683
0.683
1.071
1.069
1.058
1.057
0.10
0.01 0.005 0.0025 0.001 0.0005
31.821 63.657 127.321 318.309 636.619
6.965 9.925
14.089 22.327 31.599
4.541 5.841 7.453 10.215 12.924
3.747 4.604
5.598 7173
3.365 4.032 4.773
5.893
3.106
3.055
3.012
2.977
2.602 2.947
4.317
5.208
4.029 4.785
3.833 4.501
3.690
4.297
3.581
4.144
3.497
4.025
3.428 3.930
3.372 3.852
3.326
3.787
3.286
3.733
3.252 3.686
3.646
3.610
3.222
3.197
3.174 3.579
3.153 3.552
3.135 3.527
3.119 3.505
3.104 3.485
3.091 3.467
3.078 3.450
3.067 3.435
3.057 3.421
3.047 3.408
3.038 3.396
3.030 3.385
3.022 3.375
3.015
3.365
3.008
3.356
3.002
2.2.48
8.610
6.869
5.959
5.408
5.041
4.781
4.587
4.437
4.318
4.221
4.140
4.073
4.015
3.965
3.922
3.883
3.850
3.819
3.792
3.768
3.745
3.725
3.707
3.690
3.674
3.659
3.646
3.633
3.622
3.611
3.601
I
X
Transcribed Image Text:It is suggested by college mathematics instructors that students spend 2 hours outside class studying for every hour in class. So, for a 4-credit-hour math class, students should spend
least 8 hours (480 minutes) studying each week. The given data represent the time spent on task recorded (in minutes) for randomly selected students during the third week of the
semester. Determine if the evidence suggests students may not, in fact, be following the advice. That is, does the evidence suggest students are studying less than 480 minutes
each week? Use α = 0.05 level of significance. Note: A normal probability plot and boxplot indicate that the data come from a population that is normally distributed with no outliers.
Complete parts (a) through (e) below.
Click here to view the time spent on task data. Click here to view a table of critical t-values.
(a) State the null and alternative hypotheses.
Ho:
min
H₁:
min
(Type integers or decimals. Do not round.)
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