i need help with this questions ASAP, confused with the process of using the z table.

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Exercise QJ [L094] Bob Hale is the owner of Hale’s Quick Fill. Bob would like to estimate the mean num ber of gallons ofgasoline sold to his customers. Assume the number of gallons sold follows the normal distribution Iwith apopulation standard deviation of 2.50 gallons. From his recordsr he selects a random sample of 45 salesand finds the mean number of gallons sold is EEG. a. What is the point estimate of the population mean? {Round your answer to 2 decimal places.) me… E b. Determine a 90% confidence interval For the population mean. [Usez Distribution Table} [Round youranswers to 2 decimal places} mun-mm End:-

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