in a certain test, the z-statistic of the sample is obtained to be 2.1. If the Type error is assumed to be 5%, should we reject the null hypothesis if a) It is a left-sided test? b) It is a right-sided test? c) It is a two-sided test? d) It is a two-sided test with sample size of 10?
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- Under what circumstances is the p-value reported by the test command in Stata valid? Select all correct answers. When MLR.1-MLR.6 are true, and N is small. When MLR.1-MLR.6 are true, and N is large. When MLR.1-MLR.5 are true, MLR.6 is false, and N is small. When MLR.1-MLR.5 are true, MLR.6 is false, and N is large. O 0 0 0For a random sample drawn from a population, which of the following statement is TRUE? a) If the population is normal and the sample size is 5, the sample mean follows a normal distribution. The sample mean follows a normal distribution. b) Compared to the observed sample mean calculated from a dataset of size n=50, c) the observed sample mean calculated from a dataset of size n=60 is guaranteed to be a more accurate estimate of the population mean. The sample mean is a number. The scaled sample variance e) (n-1)s² o2 follows a chi-squared distribution.Workers at a private business was given a grade (A, B, C) based on their yearly performance. The data was recorded along with the department they belong. The results obtained using MINITAB are shown below: Expected counts are printed below observed counts a) Carefully define the null and alternative hypotheses of the ?2 test of the above table. b) Find the missing values ‘*’, ‘**’, ‘***’ ??, ??? c) What is the conclusion of this test? Give reasons for your answer.
- 26)40 - It is known that the main mass variance of product X produced in an electronic card factory is 1600 and the number of products that should be included in the sample is 230. How many days should the difference between the average of the population and the sample average be at the 95% confidence level? a) 4 B) 3 NS) 5 D) 6 TO) 7What is the population A) The 16 tourists selected B) Moscow attractions C) Moscow tourists What is the variable of interest? and is this variable Quantitative or Qualitative? A) one-day travel expense, quantitative B) success = visit Moscow, quantitative C) one-day travel expense, qualitative D) success = visit Moscow, qualitative
- courses/50306/assignments/608635?module_item_id=1106150 You wish to test the following claim (Ha) at a significance level of a = 0.005. H.:µ = 59.4 Ha:u < 59.4 You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size n = 24 with mean M = 51.1 and a standard deviation of SD = 9.7. What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... O less than (or equal to) a O greater than a This p-value leads to a decision to... O reject the null O accept the null O fail to reject the null As such, the final conclusion is that... O There is sufficient evidence to warrant rejection of the claim that the population mean is less than 59.4. O There is not sufficient evidence to warrant rejection of the claim that the population mean is less than 59.4. O The sample data support the claim that the population mean is less than 59.4. OThere i not sufficient sample ovidence to…Suppose that in a random selection of 100 colored candies, 22% of them are blue. The candy company claims that the percentage of blue candies is equal to 30%. Use a 0.10 significance level to test that claim. Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: p=0.3 H₁: p=0.3 O B. Ho: p=0.3 H₁: p=0.3 C. Ho: p=0.3 H₁: p>0.3 O D. Ho: p=0.3 H₁: p<0.3 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is (Round to three decimal places as needed.) Identify the conclusion for this hypothesis test. A. Reject Ho. There is sufficient evidence to warrant rejection of the claim that the percentage of blue candies is equal to 30% B. Reject Ho. There is not sufficient evidence to warrant rejection of the claim that the percentage of blue candies is equal to 30% O C. Fail to…Suppose that in a random selection of 100 colored candies, 21% of them are blue. The candy company claims that the percentage of blue candies is equal to 20%. Use a 0.10 significance level to test that claim. H, p#0.2 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.)
