Identify the critical value(s). Select the correct choice below and fill in any answer boxes within your choice.Answers
The critical values are -2.776 , 2.776
b)
test statistic t =1.236 (try 1.237 if this comes wrong)
c)
There is not enough evidence at the 5%level of significance to conclude that there is a significant linear correlation between vehicle weight and variability in braking distance on a dry surface.
(x-x)(y-y 4.1222 56.6944 127.9722 53.8056 -19.8444 181.9056 291.2667 (y-y) 0.0001 0.0685 0.0201 0.0117 0.0061 0.0521 0.1587 (x-x) S.No 1 2 1.74 1.99 1.87 1.62 1.65 1.5 10.37 1.7283 5950 5380 6500 5100 5850 4800 33580 5596.6667 124844.4444 46944.4444 816011.1111 246677.7778 64177.7778 634677.7778 1933333.3333 SSX 4 Total SSY Mean null hypothesis Alternate Hypothesis 0 0 for 0.05 level,two tailed test and n-2 4 degree of freedom, critical t- Decision rule: 2.7764 reject Ho if absolute value of test statistic |t| >2.776 correlation coefficient r- 0.526 test statistic: 1.2365 P value 0.2839
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