(Solved): The melting points of two alloys used in formulating solder were investigated by melting 21 sample ...

The melting points of two alloys used in formulating solder were investigated by melting 21 samples of each material. The sample mean and standard deviation for alloy 1 were x? = 420.49 °F and s? = 2.34 °F, while for alloy 2 they were ? = 425 °F and $? = 2.5 °F. Use a = 0.05 and assume that both populations are normally distributed and have equal variance. (a) Do the sample data support the claim that both alloys have the same melting point? (b) Using only Table V of Appendix A, what can you say about the P-value of the test?