Score: 0 of 1 pt 10f 2,0 complete) Hw Score: 0%, 0 of 2 pts 7.3.23-T Question He

Question

Score: 0 of 1 pt 10f 2,0 complete) Hw Score: 0%, 0 of 2 pts 7.3.23-T Question Help * A county is considering rasing the speed limit on a road because they ciaim that the mean speed of vehicles is greater than 45 miles per hour. A random sample of 20 ehicles has a mean speed of 47 miles per hour and a standard deviation of 42 miles per hour Al a 006, do you have enough evidence to support the county's claim? Complete parts (a) through (d) below (a) Wre the claim mathematically and identily Ho and Hg Choose the comect answer below Cick to select your answer and then click Check Answer Clear All

Explanation / Answer

Solution:

Claim mean greater than 45

Null hypothesis:

Ho :mu<=45

Alternative Hypothesis:

Ha:mu>45

Alternative Hypothesis is claim.

OPTION A

IS CORRECT CHOICE.

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