Suppose the expected tensile strength of type-A steel is 105 ksi and the standard deviat...

Suppose the expected tensile strength of type-A steel is 105 ksi and the standard deviation of tensile strength is 8 ksi. For type-B steel, suppose the expected tensile strength and standard deviation of tensile strength are 100 ksi and 6 ksi, respectively. Let = the sample average tensile strength of a random sample of 35 type-B specimens.