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[DOC File]Chapter Nine - Miami Dade College
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A hypothesis test is a two-tailed test if the sign in the alternative hypothesis is "≠"; it is a left-tailed test if the sign in the alternative hypothesis is " < " (less than); and it is a right-tailed test if the sign in the alternative hypothesis is " > " (greater than). Table 9.3 on page 405 …
left tailed test calculator

[DOC File]Review Chapter 5 and 6
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Find the p-value for a two tailed test with observed . p-value = 0.0394 . Find the p-value for a left tailed test with observed and . p-value = 0.01 . In a previous year, 48% of females aged 15 years of age and older lived alone. A sociologist tests whether this percentage is different today by conducting a random sample of 1000 females aged 15 ...
right tail vs left tail

[DOC File]www.csun.edu
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Left tailed test: if the alternative hypothesis H1 contains the less-than inequality symbol (), the hypothesis test is a right-tailed test.
one tailed hypothesis test example

[DOC File]St. John Fisher College
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Find the P-value for a left-tailed test with a test statistic of z = -2.23. Decide whether to reject H0 if the level of significance is α = 0.01. From the normal table z = -2.23 is P= 0.0129 which is the area in the left tail. Since 0.0129 > 0.01, you should fail to reject H0. Find the P-value for a two-tailed test with test statistic of z = 2.14.
left tailed test critical value

[DOCX File]www.houston.k12.tn.us
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NOTE: This is a left tailed test. For a right tailed test, use the “Positive” answer 1.725 . NOTE: For a left tailed test, use the “negative answer” -1.7247. NOTE: For a 2 tailed test, divide the area into 2 (.05/2 = .025) and use both tails. Hypothesis Tests for Proportions.
right tail test

[DOC File]8 - Faculty Websites
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A one-tailed test indicates that the null hypothesis should be rejected when the . test value is in the critical region on one side of the mean. A one-tailed test is either a . right-tailed. test . or . left-tailed test, depending on the direction of the inequality of the alternative hypothesis.
right or left tailed test

[DOC File]Chapter Fourteen - Miami Dade College
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For n = 7, α = .05, with a left–tailed test, the rejection region is T ≤ 4. For a left–tailed test, T is the sum of the absolute values of the negative ranks, so T = 4.5 + 6 = 10.5. Therefore, do not reject H0. Conclude that the median number of contacts is unchanged by the installation of governors. Gas Mileage
left tailed test example

[DOC File]JustAnswer
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Nov 05, 2010 · With a left-tailed test, all the probability is on the left side of the curve. With a right-tailed test, the null hypothesis is only rejected if the test statistic falls into the right side of the curve. And with a two-tailed test, the probabilities are on both sides of the curve. You can tell the direction by looking at the alternative hypothesis.
left and right tailed hypothesis

[DOC File]Practice Test 2 – Answer Key
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5. (a) Using the t-distribution for a left-tailed test with α = 0.05 and d.f. = 9, we get tc = -1.833. 6. (c) The “equal” value always goes in the null hypothesis. 7. (b) Since this is a two-sided test and n ≥ 30, we want the critical values ±zc, where -zc corresponds to a cumulative area of α/2 = 0.05.
left tailed test calculator

Left tailed test