Mathematics, 07.03.2020 00:10 rosyjesus297
(Use Excel) A police officer is concerned about speeds on a certain section of Interstate 95. The data accompanying this exercise show the speeds of 40 cars on a Saturday afternoon. Use Table 2. picture Click here for the Excel Data File a. The speed limit on this portion of Interstate 95 is 65 mph. Specify the competing hypotheses in order to determine if the average speed is greater than the speed limit. H0: μ = 65; HA: μ ≠ 65 H0: μ ≥ 65; HA: μ < 65 H0: μ ≤ 65; HA: μ > 65 b. Specify the critical value(s) for the test at the 1% significance level. (Round your answer to 3 decimal places.) Critical value(s) ± c. Use Excel to calculate the value of the test statistic. (Round your answer to 3 decimal places.) Test statistic d. At α = 0.01, are the officer’s concerns warranted? . At 1% significant level, we conclude that the average speed is greater than the speed limit. Highway Speeds 70 65 65 62 70 64 65 60 65 65 65 64 66 66 63 60 70 63 67 68 70 65 66 67 63 60 70 66 67 68 70 68 69 70 62 64 70 68 69 65
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(Use Excel) A police officer is concerned about speeds on a certain section of Interstate 95. The da...
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