The average price of homes sold in the U.S. in the past year was $220,000. A random sample of 81 homes sold this year showed an average price of $210,000. It is known that the standard deviation of the population is $36,000. At a 5% level of significance, test to determine if there has been a significant decrease in the average price of homes. 1- State the null and alternative hypotheses to be tested 2- Which test do you need to use for this question? 3-Compute the test statistic. What is the value? 4-Determine the critical value for this test. What is the value? 5-Compute the p-value. What is the value? 6- What do you conclude?

The average American consumes 86 liters of alcohol per year. Does the average college student consume more alcohol per year? A researcher surveyed 12 randomly selected college students and found that they averaged 91.5 liters of alcohol consumed per year with a standard deviation of 17 liters. What can be concluded at the the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? v Select an answer v H: ? v Select an answer c. The test statistic V = (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? v a f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest the populaton mean is significantly more than 86 at = 0.01, so there is statistically significant evidence to conclude that the population mean amount of alcohol consumed by college students is more…

The state of CT claims that the average time on death row is 15 years. A random survey of 75 death row inmates revealed that the average length of time on death row is 16.8 years with a standard deviation of 6.2 years. Conduct a hypothesis to test the state of CT's claim.What type of test should be run? t-test of a mean z-test of a proportion The alternative hypothesis indicates a left-tailed test two-tailed test right-tailed test Calculate the p-value. What is the decision? We reject the claim that the average time on death row is 15 years We fail to reject the claim that the average time on death row is 15 years

The average American consumes 91 liters of alcohol per year. Does the average college student consume a different amount of alcohol per year? A researcher surveyed 15 randomly selected college students and found that they averaged 72 liters of alcohol consumed per year with a standard deviation of 23 liters. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? v Select an answer v H: ? v | Select an answer v c. The test statistic ? (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? v a f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest the populaton mean is significantly different from 91 at a = 0.01, so there is statistically significant evidence to conclude that the population mean amount of alcohol consumed by…

The average American consumes 86 liters of alcohol per year. Does the average college student consume more alcohol per year? A researcher surveyed 11 randomly selected college students and found that they averaged 95.8 liters of alcohol consumed per year with a standard deviation of 20 liters. What can be concluded at the the a= 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho ? Select an answer H₁: ? Select an answer c. The test statistic ? C d. The p-value = e. The p-value is ? a f. Based on this, we should Select an answer the null hypothesis. g. Thus, the final conclusion is that ... (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) O The data suggest the population mean is not significantly more than 86 at a = 0.05, so there is statistically insignificant evidence to conclude that the population mean amount of alcohol consumed by college students is equal to…

Cost of Building a Home According to the National Association of Home Builders, the average cost of building a home in the Northeast is $117.91per square foot. A random sample of 42new homes indicated that the mean cost was $124.55and the standard deviation was $15. Can it be concluded that the mean cost differs from $117.91, using the 0.05 level of significance? State the hypotheses and identify the claim with the correct hypothesis. :H0 ▼not claim or claim???   :H1▼not claim ot claim???   This hypotheses test is a two tailed or one tailed??? test.

During 2008, college work-study students earned a mean of $1478. Assume that a sample consisting of 25 of the work-study students at a large university was found to have earned a mean of $1503 during that year, with a standard deviation of $210. At the 0.05 level of significance, can we suggest that the average earnings of this university’s work-study students were significantly higher than the national mean? The null and alternative hypotheses that can be used to suggest that the average earnings of this university’s work-study students were significantly higher than the national mean. Compute the value of the test statistic.

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A researcher tests whether listening to music while taking an exam has any effect. The population mean of people taking an exam while not listening to music is 50, with a standard deviation of 12. The researcher tests a sample of 57 people who listen to music while taking an exam and they produce a mean of 54.36.   Using a one-tailed test with a p value of .05, the critical value is -1.65 and 1.65. Make a decision about your hypothesis.

A quiz related to digital knowledge was conducted. The quiz had 10 questions and covered topics such as the purpose of browser cookies, phishing scams, and privacy policies. The survey was given to 50 people. The mean score is 4.1 with a standard deviation of 2.6. We want to know if the data provide evidence that the mean score in the population is lower than 5. We will use alpha = 0.05 to make our decision. What is the null hypothesis for this question? Group of answer choices a. The proportion of people who pass the test is 5. b. The mean test score of the population is 5. c. The mean test score of the 50 people who took the test is 5. d.The standard deviation is 2.6