Want to test the claim that a population mean equals 38. (Enter != for as needed.) (a) State the null hypothesis. Ho Enter an equation. (b) State the alternate hypothesis if you have no information regarding how the population mean might differ from 38. H: (c) State the alternative hypothesis if you believe (based on experience or past studies) that the population mean may exceed 38. H: (d) State the alternative hypothesis if you believe (based on experience or past studies) that the population mean may be less than H: