Ten Secretaries Were Selected at Random from Among the Secretaries

Short Answer

Ten secretaries were selected at random from among the secretaries of a large university. The typing speed (number of words per minute) was recorded for each secretary on two different brands of computer keyboards. Assume that the typing speeds are not normally distributed. The following results were obtained. Test to determine if these data provide enough evidence at the 5% significance level to infer that the brands differ with respect to typing speed.
z-statistic = ______________
Reject if |z| > ______________
Conclusion: ______________
These data ______________ enough evidence at the 5% significance level to infer that the brands differ with respect to typing speed.