Road Transport Department claims that the mean speed of cars on a highway is 114 km/h. An insurance company took a random sample of 21 cars driven on a highway and found that the test statistic is -2.2913. Can we accept the Road Transport Department's caim at 5% level of significance? (Hint: o unknown) (a) The correct null hypothesis to illustrate the above situation is Ho : -114 Choose. (b) Choose the correct critical value. Choose... Choose

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