In testing a hypothesis about two population means, if the t distribution is used, which of the following assumptions is required? Select one:
a. Both populations are normally distributed.
b. The standard deviations are not the same.
c. Both population means are the same.
d. The sample sizes are equal.

Who was thomas jefferson and what was his constitution toward the development of the us government

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Which statement about jews is not correct? question 6 options: a: jews had been disliked and persecuted for many centuries. b: jews lived and worked in businesses throughout germany. c: many germans blamed jews for germany’s economic problems. d: jews began migrating to germany after the end of world war i.