A sample of 23 discount brokers showed a sample mean price charged for a trade of 100 shares ...

  

A sample of 23 discount brokers showed a sample mean price charged for a trade of 100 shares at $50 per share was $46.50. Assume a population standard deviation of $7.90. Test the hypothesis that the mean price charged for a trade of 100 shares at $50 per share is at most $43.00 at α=0.0500. (round to 4 decimal places)

What is the test statistic?

What is the decision?

What is the p-value? (fill in only one of the statements)

If the Z table is appropriate, p-value = ______

If the t table is appropriate, _____ < p-value < _____