The manager of a restaurant in a large city claims that waiters working in all restaurants in his city earn an average of $153 or more in tips per week. A random sample of 26 waiters selected from restaurants of this city yielded a mean of $140 in tips per week with a standard deviation of $28. Assume that the weekly tips for all waiters in this city have a normal distribution. a. Using a 5% significance level, can you conclude that the manager's claim is false? Use both approaches. Use the p-value approach. Use the t distribution table to find a range for the p-value. Enter the exact values for the range. i

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