Consider the following hypothesis test. Ho: με 12 Ha: > 12 If a random sample of size 25 drawn from a normally distributed population provided a sample mean of 14 and a sample standard deviation of 6.19, what is the range for the p-value? Op-value > 0.200 O 0.025 p-value < 0.050 0.050 < p-value < 0.100 O 0.010 < p-value < 0.025 O 0.100 < p-value < 0.200
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- We want to perform the following hypothesis test for the average score of an exam in a statistics class: Ho: µ2 86, Hạ: µ < 86. Assuming that exam scores are normally distributed, we collect a random sample of 16 exam scores and obtain a mean of 77.5 and standard deviation of 15.19. What is the test statistic? Round your answer to four decimal places.You wish to test the following claim (HaHa) at a significance level of α=0.002α=0.002. Ho:μ=57.8Ho:μ=57.8 Ha:μ<57.8Ha:μ<57.8 You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size n=6n=6 with mean ¯x=50.2x¯=50.2 and a standard deviation of s=9.8s=9.8. What is the test statistic for this sample? test statistic = Round to 3 decimal places What is the p-value for this sample? p-value = Use Technology Round to 4 decimal places. The p-value is... less than (or equal to) αα greater than αα This test statistic leads to a decision to... reject the null accept the null fail to reject the null As such, the final conclusion is that... There is sufficient evidence to warrant rejection of the claim that the population mean is less than 57.8. There is not sufficient evidence to warrant rejection of the claim that the population mean is less than 57.8. The sample data support the claim that the…We want to conduct a hypothesis test of the claim that for middle-aged adults the population mean of their cholesterol levels is less than 195.7 mg a random sample of such levels. The sample has a mean of 192.7 and a standard deviation of 19 dL mg dL (a) The sample has size 14, and it is from a normally distributed population with an unknown standard deviation. 0:= 0 O For each of the following sampling scenarios, choose an appropriate test statistic for our hypothesis test on the population mean. Then calculate that statistic. Round your answers to two decimal places. O =0 O It is unclear which test statistic to use. (b) The sample has size 20, and it is from a normally distributed population with a known standard deviation of 19.1. z = 0 O o t=0 O It is unclear which test statistic to use. mg dL X We choose S
- You wish to test the following claim (Ha) at a significance level of α=0.02 Ho:μ=57.8 Ha:μ≠57.8You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size n=9with mean M=62.1 and a standard deviation of SD=11.6.What is the test statistic for this sample? (Report answer accurate to three decimal places.)test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.)p-value = The p-value is... less than (or equal to) αα greater than αα This test statistic leads to a decision to... reject the null accept the null fail to reject the null As such, the final conclusion is that... There is sufficient evidence to warrant rejection of the claim that the population mean is not equal to 57.8. There is not sufficient evidence to warrant rejection of the claim that the population mean is not equal to 57.8. The sample data support the claim that the population mean is not equal…consider the following hypothesis test H0: u = 22 H a :u (canceled =) 22 A sample of 75 is used and the population standard deviation is 10 . Compute the -value and state your conclusion for each of the following sample results. Use a=0.01. Round value to two decimal places and -value to four decimal places. Enter negative values as negative numbers. a. (mean)=23 z-value p-value b. (mean)= 25.1 z-value p-value c. (mean)=20 z- value p-valueA company is doing a hypothesis test on the variation of quality from two suppliers. Both distributions are normal, and the populations are independent. use a = 0.01 2 H0:01 HA: 01 > 2 2 02² 10₂² The standard deviation of the first sample is 2.2077 5.1485 is the standard deviation of the second sample. The test statistic is =
- You wish to test the following claim (Ha) at a significance level of a = 0.002. Ho: p=61.8 Ha : μ < 61.8 You believe the population is normally distributed and you know the standard deviation is o = 13.8. You obtain a sample mean of M = 56.3 for a sample of size n = 43. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value =You wish to test the following claim (Ha) at a significance level of α=0.002 Ho:μ=81.8 Ha:μ<81.8You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size n=22 with mean M=76.5 and a standard deviation of SD=14.6What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... A-less than (or equal to) αα B-greater than αα This test statistic leads to a decision to... A-reject the null B-accept the null C-fail to reject the null As such, the final conclusion is that... A-There is sufficient evidence to warrant rejection of the claim that the population mean is less than 81.8. B-There is not sufficient evidence to warrant rejection of the claim that the population mean is less than 81.8. C-The sample data support the claim that the population mean…Scores on an IQ test are normally distributed. A sample of 25 IQ scores had variance of 64. The developer of the test claims that the population standard deviation is 15. Do these data provide sufficient evidence to significance? Use α=0.05α=0.05 . Answer the following questions. (a) What is the parameter? . (input as "mean", "standard deviation", "variance" or "proportion") (b) Determine if the alternative hypothesis is "right", "left" or "two-tailed" test. (input as "right", "left" or "two-tailed") (c) Test by using a confidence interval. Round confidence interval to nearest thousandth. (e.g. 0.1345 would be entered as 0.135) between ( and ) (d) State conclusion.: There is (input as "sufficient" or "insufficient") to (input as "conclude" or "reject") to conclude that the population standard deviation of IQ test is 15.
- You wish to test the following claim (HaHa) at a significance level of α=0.001. Ho: μ=52.8 Ha :μ≠52.8You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size n=34 with mean M=41.2 and a standard deviation of SD=17.4.What is the test statistic for this sample? (Report answer accurate to three decimal places.)test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.)p-value = The p-value is... less than (or equal to) αα greater than αα This test statistic leads to a decision to... reject the null accept the null fail to reject the null As such, the final conclusion is that... There is sufficient evidence to warrant rejection of the claim that the population mean is not equal to 52.8. There is not sufficient evidence to warrant rejection of the claim that the population mean is not equal to 52.8. The sample data support the claim that the population mean is…You wish to test the following claim (HaHa) at a significance level of α=0.002α=0.002. Ho:μ=54.5 Ha:μ≠54.5You believe the population is normally distributed and you know the standard deviation is σ=18.1. You obtain a sample mean of M=62 for a sample of size n=21.What is the test statistic for this sample? (Report answer accurate to three decimal places.)test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.)p-value = The p-value is... less than (or equal to) αα greater than αα This test statistic leads to a decision to... reject the null accept the null fail to reject the null As such, the final conclusion is that... There is sufficient evidence to warrant rejection of the claim that the population mean is not equal to 54.5. There is not sufficient evidence to warrant rejection of the claim that the population mean is not equal to 54.5. The sample data support the claim that the population mean is not equal to 54.5.…The federal government would like to test the hypothesis that the average age of men filing for Social Security is higher than the average age of women set using α = 0.05 with the following data: Men Women Sample mean 64.5 years 63.6 years Sample size 35 39 Population standard deviation 3.0 years 3.5 years If Population 1 is defined as men and Population 2 is defined as women, the p-value for this hypothesis test would be ________.