Question

9. Which of the following alternative hypotheses would indicate a two-tailed test? (1 point) >0 040 0470 u=0

Answer 1

Answer : 3rd option :
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Explanation:

Null hypothesis: A hypothesis of "no difference" is called as null hypothesis or according to R. A. Fisher, null hypothesis is the hypothesis which is tested for possible rejection under the assumption that it is true. Null hypothesis is denoted by H.. For example: Ho:4 = 100. Here the hypothesis states that there is no difference in population mean and 100. Ho: 4 = Hy. This hypothesis states that there is no difference between two population means. While conducting the test some difference will be observed in sample value and hypothesized value. Whether this difference is treated to be ignorable under Ho or it is just due to chance element, is decided in testing procedure. Alternative hypothesis: It is a hypothesis to be accepted in case null hypothesis is rejected. In other words a complementary hypothesis to null hypothesis is called as alternative hypothesis. It is denoted by H. For example: If Ho:4. = 11,, then alternative hypothesis may be H2:46H or H:44 <H2 or H:4>4 One and Two Tailed Hypothesis: By considering the nature of hypothesis, those are classified as one sided or two sided. Hypothesis of the type Hy: l> 4. Hz: P<0.5, H7 : 41, 42, etc. are called as one sided hypothesis. On the other hand the hypothesis of the type H: 4, u,, H:P*0.5, H.: u u., etc. are called as two sided hypothesis.