Question 12
(05.05 mc)
the speed of a car, measured in miles per hour, was determined 10 times at random. the results are 22, 43, 35, 32, 41,
28, 29, 30, 37, and 43 miles per hour. construct a 95% confidence interval for the mean speed of this vehicle. (4 points)
(28.9642, 39.0358)
(29.2226, 38.7774)
(28.9642, 38.7774)
(29.2226, 39.0358)
(29.9193, 38.0807)
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7.25

step-by-step explanation:

we know that 7 equals to 7.0. we also know that 1/4=0.25. so we can add the two together and we get 7.25

answer: 5

step-by-step explanation:

since, the range is the difference between the lowest and highest values of the given sample space.

and, here the sample space = { 3, 1, 0, 4, 1, 4, 2, 3, 0, 5, 0, 1, 1, 2, 0, 4, 1,4, 4 ,2 ,3 ,2 ,0 ,1 ,4 }

here, the highest value of the given sample = 5

and, the lowest value = 0

therefore, the range of the sample space = 5 - 0 = 5

answer: i think it is c