Value of test statistic Chi square is 6.435 and critical value of Chi square from the table is 6.345; thus we will reject the null hypothesis (H0). Select one: a.True B.False
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- 13. The sign of the alternative hypothesis in a two-tailed test is always A. C. greater than D. less than equal B. not equal 14. This hypothesis states that there is no difference between population parameters and the hypothesized value. A. hypothesis B. alternative hypothesis C. null hypothesis D. two-tailed hypothesis 15. "The ratings given by male and female students with regard to the online teaching skills of their teachers is the same." This statemen example what kind of hypothesis? A. one-tailed hypothesis B. alternative hypothesis C. null hypothesis D. two-tailed hypothesis 16. "The use of social media as modern approach of advertising will increase the demand for a new product." This is an exam __hypothesis. A. Mean B. null C. alternative D. two-tailed 17. Which is the correct alternative hypothesis for one-tailed test? A. µ = 25 B. µ # 25 C.µ ≥ 25 D. p < 25 18. Mrs. Nazareth conducted a research on the preference of residents of Mayapa in choosing their venue for occasions.…20. Which of the following is a null hypothesis? a. Pregnant women who drink cranberry juice will have lower urine bacterial counts than those who do not drink cranberry juice. b. The urine bacterial count of pregnant women who drink cranberry juice will be lower or equal to that of pregnant women who do not drink the juice. c. There will be a difference between ingestion of cranberry juice and among pregnant women who do and do not have high urine bacterial counts.16. Researchers claim that 60 tissues are the average number of the tissues a person uses during the course of a flue. The company who makes Kleenex brand tissues that thinks that fever of the tissues are needed. What are their null and alternative hynothesis 17. A randomly selected ample of 1,000 college students was asked whether they had ever drunk alcohol. Sixteen percent of the 1000 students surveyed said they had. Which one of the following statements about the number 0.16 is correct? A. Itis a sample proportion B. It is a population proportion C. It is a margin error D. It is a randomly chosen number 18. A random sample of 100 voters in a community produced 59 voters in faxour of candidate A. The observed value of the test statistics for testing the null hypothesis Ho pi = 0.5 versus the alternative hypothesis Ha pi is not equal to 0.5. a (0.05) А. 1.80 В. 1.90 С. 1.83 D. 1.28
- 3. State or specify the null and alternative hypotheses in the following (use complete statements, not symbols): f. A COA auditor wants to determine if the mean monthly "ayuda" to poor Dagupan residents during the pandemic is really P5,000 as published. a. Null Hypothesis, Ho: b. Alternative Hypothesis, Ha: g. In an experimental group of 250 individuals, half were given regular doses of aspirin while the other half were given placebos with no effects. Test the claim that the aspirin group has a significantly lower heart attack rate than the placebo group. a. Null Hypothesis, Ho: b. Alternative Hypothesis, Ha: h. Is there a significant difference in the level of audit practice of accountants in terms of type of corporation, whether privately-owned or government-owned? a. Null Hypothesis, Ho: b. Alternative Hypothesis, Ha: i. Are there significant differences in the degree of influence encountered by the employees when grouped according to status of appointment, whether contractual or…In a sample of 27 blue M&Ms with a mean weight of 0.8560 g. Assume that population standard deviation is 0.0565g. Consider a hypothesis test that use a 0.05 significance level to test the claim that the mean weight of all M&Ms is equal to 0.8535 g. A) Find the null hypothesis and alternative hypothesis in symbolic form. B) Find the test statistics using the formula.15. In a test of hypothesis about a mean, the critical value for a = 0.05 in a two-tailed test is 1.96. The resulting test statistic value from the sample data is -2.75. Which is the correct decision to make based on the given information? A. Reject the null hypothesis B. Change the alternative hypothesis O C. Fail to reject the null hypothesis D. Redefine the hypothesis
- 07 A statistics professor wants to determine whether the average grade on Assignment 1 differs significantly from 23 (A average). a) State the null and alternative hypotheses. b) Based on the t-test in the following table 1, make a decision regarding the null hypotheses. c) Explain the results observed in (b). assign1 assign1 t -4.944 N dif 15 14 Mean 21.0333 Std. Deviation 1.54072 Test Value = 23 Mean Sig. (2-tailed) Difference .000 -1.96667 Table 1: T-test Std. Error Mean 39781 95% Confidence Interval of the Difference Lower Upper -2.8199 -1.11347)5. A one-way ANOVA test is conducted and finds the following results: n = 34, K = 4, x̅ = 8.32, MST = 26.723, and MSE = 14.767. What is the test statistic, F, for this ANOVA test? B. 1.81 D. 3.69 C. 3.21 A. 1.77 6. A hypothesis test is conducted with H0 : p1 - p2 = 0 vs. Ha: p1 - p2 ≠ 0 . What is the tail area of the hypothesis test given the sample data: n1= 121, p1=0.79, n2= 81, p2 = 0.67 C. 0.0614 B. 0.0536 A. 0.0268 D. 0.0307
- 18. A credit card company claims that the mean time the customers spend on hold is 3.5 minutes. An employee of this company believes that customers spend more than 3.5 minutes on hold. A random sample of n = 36 calls is selected and the mean time the customers in this sample spent on hold was 5.15 minutes. All conditions for inference were met and the p-value for the appropriate hypothesis test was 0.031. Which of the following statements is the best interpretation of the p-value? (A) There is a 0.031 probability that the alternative hypothesis is true. (B) There is a 0.031 probability that the null hypothesis is true. (C) If the null hypothesis is true, there is a 0.031 probability of finding convincing evidence that 5.15 minutes is greater than 3.5 minutes. (D) If the null hypothesis is true, the probability of finding convincing evidence that the null hypothesis is true is 0.031. (E) If the null hypothesis is true, the probability of observing a sample mean of at least 5.15 minutes…following hypothesis test for matched data: Но : ld H1 : Hd + 0 For a sample of 18, it was found that d = 2.9 and sa = 3.56. Determine each of the following: The value of the test statistic: For a = 0.025, the final conclusion is O A. There is enough evidence to say that Hd = 0 B. There is enough evidence to say that ud # 0 C. There is not enough evidence to say that ld = 0 D. There is not enough evidence to say that Hd + 0.3. The producers of a new toothpaste want to see if it is performing similar to their main whitening toothpaste in preventing cavities. Their main whitening tooth paste performance at a six-month checkup is i.73 (o-1.12). To test the new tooth paste, 60 people used it for six-months. At the checkup they found a mean of 1.5 cavities. Perform the appropriate hypothesis testing. Make sure to include all the steps (hypotheses, critical values, calculations, conclusions an interpretations). 0.0 68