The California Highway Patrol Chp Routinely Compiles Car Crash Data In California The Accompanying Table Shows Shows 1 (93.57 KiB) Viewed 41 times
The California Highway Patrol (CHP) routinely compiles car crash data in California. The accompanying table shows shows a portion of the data for Santa Clara county. It shows information on the type of car crash (Head-On or Not Head-On) and light (Daylight or Not Daylight). (You may find it useful to reference the appropriate table: chi-square table or Ftable) pictureClick here for the Excel Data File ID 1 2 ⠀ 290 Crash Not Head-On Not Head-On Light Condition Daylight (D) Not Daylight (ND) Not Daylight a. Use the data to construct a contingency table. Light Not Daylight Daylight Not Head-On Crash Type Head-On (H) Not Head-On (NH) 166 108 3,258 1,326 b. Specify the competing hypotheses to determine whether crash type is related to light. O Ho: Crash Type and Light Condition are dependent; HA: Crash Type and Light Condition are independent Ho: Crash Type and Light Condition are independent; HA: Crash Type and Light Condition are dependent
c-1. Calculate the value of the test statistic. (Round intermediate calculations to at least 4 decimal places and final answer to 3 decimal places.) Test Statistic c-2. Conduct the test at the 1% significance level and make a conclusion. ● Reject Ho; Crash Type and Light Condition are dependent Reject Ho; Crash Type and Light Condition are not dependent Do not reject Ho; Crash Type and Light Condition are dependent Do not reject Ho; Crash Type and Light Condition are not dependent
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