A medical research team claims that the mean recovery time for patients after the new surgical treatment is more than 72 hours. A MTH 213 student wants to test this claim. The appropriate null and alternative hypotheses are
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- You are conducting a study to see if the proportion of men over the age of 50 who regularly have their prostate examined is significantly less than 0.33. A random sample of 766 men over the age of 50 found that 202 have their prostate regularly examined. Do the sample data provide convincing evidence to support the claim? Test the relevant hypotheses using a 1% level of significance. Give answer to at least 4 decimal places.What are the correct hypotheses? (Select the correct symbols and use decimal values not percentages.) Based on the hypotheses, find the following:Test Statistic = Critical-value=A sample of 800 computer chips revealed that 43% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature claimed that more than 38% do not fail in the first 1000 hours of their use. Is there sufficient evidence at the 0.01 level to support the company's claim? State the null and alternative hypotheses for the above scenario.Is there a difference between men and women when it comes to seeking preventative healthcare? At the a = 0.01 level of significance, test the claim that the proportion of those who have had a wellness visit with their physician in the past year is the same for men and women. Let pp represent the proportion of females who have had a wellness visit with their physician in the past year and pM represent the proportion of males who have done the same. Which would be correct hypotheses for this test? O Ho:PF = PM, H1:PF > PM O Ho:PF + PM, H1:PF > PM O Ho:PF = pM, H1:pF < pM O Ho:PF = PM, H1:PF # PM In a random sample of 331 females, 306 have had a wellness visit with their physician in the past year. In a random sample of 272 males, 237 have had a wellness visit with their physician in the past year. Find the test statistic (2 decimal places): Give the P-value (4 decimal places - if less than 0.001 answer 0): Which is the correct result: O Reject the Null Hypothesis O Do not Reject the Null…
- Women athletes at a certain university have a long-term graduation rate of 67%. Over the past several years, a random sample of 38 women athletes at the school showed that 23 eventually graduated. Does this indicate that the population proportion of women athletes who graduate from the university is now less than 67%? Use a 10% level of significance. What is the level of significance? (b) State the null and alternate hypotheses. H0: p = 0.67; H1: p > 0.67 H0: p = 0.67; H1: p ≠ 0.67 H0: p < 0.67; H1: p = 0.67 H0: p = 0.67; H1: p < 0.67 What sampling distribution will you use? The Student's t, since np < 5 and nq < 5. The standard normal, since np < 5 and nq < 5. The standard normal, since np > 5 and nq > 5. The Student's t, since np > 5 and nq > 5. What is the value of the sample test statistic? (Round your answer to two decimal places.) Find the P-value of the test statistic. (Round your answer to four decimal places.)…Life on Other Planets Forty-five percent of people believe that there is life on other planets in the universe. A scientist does not agree with this finding. He surveyed 110 randomly selected individuals and found 66 believed that there is life on other planets. At α=0.05, is there sufficient evidence to conclude that the percentage differs from 45? Use the P-value method with a graphing calculator. State the hypotheses and identify the claim with the correct hypothesis. H0 : p=0.45 ▼not claim H1 : p≠0.45 ▼claim This hypothesis test is a ▼two-tailed test. Find the P-value. Round the answer to four decimal places. P-value = ___________________A risky eye surgery for patients in danger of permanent blindness is known to historically cure the condition in 35% of all cases of performing the surgical procedure. A new procedure is proposed for which the researchers claim that they will improve that rate of cure. -Write an appropriate null and alternate hypothesis for the researchers to test their claim.
- In 1995, it was determined that 78% of US citizens supported a ban on household aerosols. Thinking that this proportion may have changed over the past few decades, a sample will be taken to test if a change has occurred. In a SRS of 500 citizens taken this year, 350 supported the ban. Determine the pvalue associated with the test. find null and alternate hypothesis.Studies done by the CDC have found that about 35.2% of all American adults do not get enough sleep (<7 hours) in 2014. Researchers feel that this percent is higher for men (age 18-24). From a sample of 200 men, 88 indicated that they get less than 7 hours of sleep. Test the researchers' hypothesis that the percent is higher than 35.2%. Write down the null and alternative hypotheses. b. Calculate the test statistic. Mr C. Calculate the p-value. d. Based on the p-value, what is your conclusion? a.You are conducting a study to see if the proportion of men over the age of 50 who regularly have their prostate examined is significantly less than 0.33. A random sample of 737 men over the age of 50 found that 206 have their prostate regularly examined. Do the sample data provide convincing evidence to support the claim? Test the relevant hypotheses using a 5% level of significance. Give answer to at least 4 decimal places. What are the correct hypotheses? (Select the correct symbols and use decimal values not percentages.) Ho: p Test Statistic = OB H₁: p Based on the hypotheses, find the following: Critical-value= OB 0.33 0.33 Or
- You are conducting a study to see if the proportion of men over the age of 50 who regularly have their prostate examined is significantly less than 0.36. A random sample of 707 men over the age of 50 found that 198 have their prostate regularly examined. Do the sample data provide convincing evidence to support the claim? Test the relevant hypotheses using a 10% level of significance. Give answer to at least 4 decimal places. What are the correct hypotheses? (Select the correct symbols and use decimal values not percentages.) Ho: Select an answer v? v H1: Select an answer ? v Based on the hypotheses, find the following: Test Statistic = Critical-value= Shade the sampling distribution curve with the correct critical value(s) and shade the critical regions. The arrows can only be dragged to z-scores that are accurate to 1 place after the decimal point (these values correspond to the tick marks on the horizontal axis). Select from the drop down menu to shade to the left, to the right,…just the last part thank you!Previously, 5% of mothers smoked more than 21 cigarettes during their pregnancy. An obstetrician believes that the percentage of mothers who smoke 21 cigarettes or more is less than 5% today. She randomly selects 140 pregnant mothers and finds that 5 of them smoked 21 or more cigarettes during pregnancy. Test the researcher's statement at the a = 0.05 level of significance. What are the null and alternative hypotheses? < 0.05 Họ: p = 0.05 versus H,: p (Type integers or decimals. Do not round.) Because npo (1- Po) < 10, the normal model may not be used to approximate the P-value. (Round to one decimal place as needed.)