Please Help me with this Questions
Please Help me with this Questions A software design firm has developed a prototype educational computer...
Question 2 (1 point) Which is the correct Null and Alternate Hypotheses? You want to test whether the average family earns different from $100.000 per year. Ο HO : μ = 100, 000 Η : μ 100, 000 Ο HO : μ 100, 000 Η : μ = 100, 000 Ο HO : μ2 100, 000 Η : μ< 100, 000 Ο Ηo : μ: 100, 000 Η : μ> 100, 000 Question 3 (1 point) Which is the correct...
must maintain a dry field. A new bonding adhesive has been developed to eliminate the necessity of a dry field. However, there is concern that the When bonding teeth, new bonding adhesive is not as strong as the current standard, a composite adhesive. Tests on a sample of 8 extracted teeth bonded with the new adhesive resulted in a mean breaking strength (after 24 hours of x=5.35 Mpa and a standard deviation of s=0.39 Mpa. Orthodontists want to know if...
Test: Exam#2 Out Submit Test isti This Question: 1 pt 9 of 19 (13 complete) This Test 19 pls p E Question Help Use technology to help you test the claim about the population mean, u, at the given level of normally distributed. Claim: μ > 11 70: α:0.07; σ 203 39. Sample statistics: x. 1194 38, n-250 Identify the null and alternative hypotheses. Choose the correct answer below O A. Ho:H> 1194.38 Ha Hs 119438 O B. Hous!19438 Ha...
2. Hypothesis tests about a population mean, population standard deviation known Aa Aa Lenders tighten or loosen their standards for issuing credit as economic conditions change. One of the criteria lenders use to evaluate the creditworthiness of a potential borrower is her credit risk score, usually a FICO score. FICO scores range from 300 to 850. A consumer with a high FICO score is perceived to be a low credit risk to the lender and is more likely to be...
im so grateful for all your help! this has helped me in so many ways especially with all the things going on right now. thank you so much !! 1 2 3 4 (1 point) 35 people are randomly selected and the accuracy of their wristwatches is checked, with positive errors representing watches that are ahead of the correct time and negative errors representing watches that are behind the correct time. The 35 values have a mean of 94sec and...
Please help me with my whole assigment 1. [7 marks in total] A statistics practitioner took a random sample of 31 observations from a normal population. The sample standard deviation is 34 and the sample mean is 97. Note: For each confidence interval, enter your answer in the form (LCL", UCL"). You must include the parentheses and the comma between the confidence limits. A. Estimate the population mean with 95% confidence. Diagram Confidence interval B. Estimate the population mean with...
Please help me get the right values, I cannot figure it out. Please show your work. A statistical program is recommended The following observations are on stopping distance (ft) of a particular truck at 20 mph under specified experimental conditions 32.1 30.8 31.7 30.4 31.0 31.9 The report states that under these conditions, the maximum alowable stopping distance is 30. A normal probability plot validates the assumption that stopping distance is normally distributecd. (a) Does the data suggest that true...
Please answer all 3 questions mpus A test of sobriety involves measuring the subject's motor skills. Twenty randomly selected sober subjects take the test and produce a mean score of 41.0 with a standard deviation of 3.7. At the 0.01 level of significance, test the claim that the true mean score for all sober subjects is equal to 40.0. Use the traditional method of testing hypotheses. The results for the test turn out to be: Hopp = 40.0.HAP 40.0. Test...
your help is appreciated :) The average wait time to see a doctor at the Walnut ER on a Monday afternoon is 12 minutes. Is the mean wait time less for women with small children? Wait times for 12 randomly selected women with small children are shown below. Assume that the distribution of the population is normal. 11, 11, 9, 12, 13, 11, 10, 10, 11, 12, 12, 11 What can be concluded at the the a -0.01 level of...
Please help me answer correctly all parts: b. test statistic ? c. P-value ? d. state the final conclusion that addresses the original claim. Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Identify the null and altenative hypotheses, test statistic, P-value, and state the final conclusion that addresses the oginal claim. A safety administration conducted crash tests of child booster seats for cars. Listed below are results from those...