Last year a company received 50 complaints concerning carpet installation. The data in the accompanying table represents the number of days between the receipt of a complaint and the resolution of the...


Last year a company received 50 complaints concerning carpet installation. The data in the accompanying table represents the number of days between the receipt of a complaint and the resolution of the complaint.



a. The supervisor claims that the mean number of days between the receipt of a complaint and the resolution of the complaint is 20 days. At the 0.10
level of​ significance, is there evidence that the claim is not true​ (that is, that the mean number of days is different from 20​)?


State the null and alternative hypotheses.

i Data Table<br>Days between receipt and resolution of complaint<br>134<br>52<br>59<br>4<br>32<br>38<br>154<br>127<br>23<br>112<br>3<br>125<br>102<br>160<br>73<br>66<br>24<br>18<br>11<br>22<br>94<br>84<br>39<br>25<br>21<br>1<br>10<br>3<br>31<br>31<br>24<br>24<br>22<br>3<br>13<br>38<br>12<br>11<br>19<br>11<br>11<br>30<br>58<br>37<br>24<br>25<br>25<br>26<br>36<br>60<br>Print<br>Done<br>

Extracted text: i Data Table Days between receipt and resolution of complaint 134 52 59 4 32 38 154 127 23 112 3 125 102 160 73 66 24 18 11 22 94 84 39 25 21 1 10 3 31 31 24 24 22 3 13 38 12 11 19 11 11 30 58 37 24 25 25 26 36 60 Print Done

Jun 07, 2022
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