Consider the following sample of 10 measurements, saved in the LM14_4 file.

Use these data, the binomial tables (Table II, Appendix A), v and α = .05 to conduct each of the following sign tests:
a. H0: h = 9 versus Ha: h 7 9
b. H0: h = 9 versus Ha: h  9
c. H0: h = 20 versus Ha: h 6 20
d. H0: h = 20 versus Ha: h  20
e. Repeat each of the preceding tests, using the normal approximation to the binomial probabilities. Compare the results.
f. What assumptions are necessary to ensure the validity of each of the preceding tests?

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