![]() ![]() Since the Z Test > Z Score, we can reject the null hypothesis. So from that, we can say that 0.025 will give z value of -1.96 If you see here, on the left side the values of z are given and in the top row, decimal places are given. Once we find that value from the table, we need to extract z value. Since the level of significance is 0.025 each side, we need to find 0.025 in the z table. So 0.025 each side and we will look at this value on the z table. This is a Two tail test, so the probability lies on both side of the distribution. Z – Test is calculated using the formula given below Suppose you have been given the following parameters and you have to find the Z value and state if you accept the null hypothesis or not:Īlternate hypothesis Ha: Population Mean ≠ 30 ![]() You can download this Hypothesis Testing Formula Excel Template here – Hypothesis Testing Formula Excel Template Hypothesis Testing Formula – Example #1 ![]()
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