You conduct the following hypothesis test for one categorical variable: Ho: p >= 0.4 vs. Ha: p < 0.4. Which of the following z test statistic values has a better chance of rejecting the null hypothesis (Ho:) and why?
z = -2.15
OR
z =-2.00
You conduct the following hypothesis test for one categorical variable: Ho: p >= 0.4 vs. Ha:...
8. You want to test Ho: p=0.6 vs. Ha: p=0.6 using a test of hypothesis. If you concluded that p is 0.6 when, in fact, the true value of p is not 0.6, then you have made a a. Type I error b. Type I and Type II error c. Type II error d. correct decision
For a Test of Hypothesis about a Population Proportion, Ho :p ≤ 0.2 and Ha: p > 0.2, p^(p-hat) = 0.3, α = 0.05, n = 100 What is the Test Statistic Z (ZTest) for hypothesis testi
Assume that you are conducting a test with the following hypothesis Ho: μ = 11 vs Ha: μ < 11. The test statistic for the test is t = -2.96 with a sample size of 30. What is the p-value for this test? Select one: a. between 0.100 and 0.050. b. between 0.05 and 0.025 c. between 0.005 and 0.01 d. between 0.0025 and 0.005 e. between 0.02 and 0.01
You conduct a hypothesis test for the population mean. After you calculate the t test statistic, you find that your p-value = 0.04. Using alpha (a) = 0.01 level of significance, what is your decision regarding the null hypothesis? (either reject Ho and accept Ha, or fail to reject Ho)
Perform the following hypothesis test of a proportion: HO: p = 0.33 HA: p not equal to 0.33 The sample proportion is 0.31 based on a sample size of 100. Use a 10% significance level. A) What is the value of the test statistic? (Give answer rounded to 2 decimals) (be careful to make sure your + or - sign is correct) B) What is the p-value for the problem? C) should the null hypothesis be rejected? YES or NO
A hypothesis test for a population proportion p is given below: Ho: p = 0.25 vs. Ha: p NE 0.25 (NE means not equal) For sample size n=100 and sample proportion p = 0.30, compute the value of the test statistic: 1.67 -1.12 0.04 1.15
In a test of hypothesis Ho: P = .31 versus Ha: P > .31 at the 1% level of significance a sample size of 1560 produced a p-hat(sample proportion) value of .34 and a test statistic z = 2.59. The p-value (observed significance level) of the test is about A 0.010 B 0.005 C 0.350 D 0.310 E 0.995
You conduct a hypothesis test about a population proportion p at a significance level of a = .01 using a random sample of size n = 38. Your test statistic follows a standard normal distribution when the null hypothesis is true as an equality, and its value obtained from the sample is z = -2.75. Use the Distributions tool to help you answer the questions that follow. Select a Distribution Distributions 0 1 2 3 If you perform a lower...
A hypothesis testing: Ho : p=0.55 HA: p >0.55. We conduct a survey with sample size n =832 and have p =0.75. Find the test statistic z associated with the sample proportion. Note: 1- Only round your final answer to 2 decimal places. Enter your final answer with 2 decimal places.
Question 10 You conduct a hypothesis test using a computer and get the following results: Test of p = 0.7 vs p -/-0.7 Z-value -1.57 p-value 0.1164 The significance level for this test is alpha=0.10, so you decide to fail to reject the null hypothesis. Which of the following statements is true? (Select all that apply) (A) If this test was one-tailed instead of two-tailed, you would still fail to reject the null. (B) If this test was one-tailed instead...