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1. For women aged 13-24, systolic blood pressures [in mmHg} are normally distributed with [1:11-43 and 6:] 3.1. a. Find the probability a woman aged 13-24 has systolic blood pressure exceeding 120. Use Normal Probability Calculator b. Find the 30th percentile of systolic blood pressure for women aged 13-24 Use Inverse Normal Percentile Calculator c. "'40 women are randomly selected, nd the probability that their mean blood pressure exceeds 120. d. If the pdf for systolic blood pressure did NOT follow a normal distribution, would your answer to part b change? Explain. 2. It has been reported that 28% of all Californians have visited Yosemite National Park. A pollster samples 100!) Californians and determines that 240 of them have visited Yosemite National Park. a. Determine the value of the sample proportion, f: , of Californians who have visited Yosemite. Is the higher or lower than the reported population value? b. Determine the expected value of the sample proportion. 2. It has been reported that 28% of all Californians have visited Yosemite National Park. A pollster samples 1000 Californians and determines that 240 of them have visited Yosemite National Park. a. Determine the value of the sample proportion, , of Californians who have visited Yosemite. Is the higher or lower than the reported population value? b. Determine the expected value of the sample proportion. c. Determine the standard deviation of the sample proportion. d. Determine that the condition for normality is satisfied. e. Determine the probability the sample proportion exceeds 0.24. f. Determine the probability the sample proportion is between 0.2 and 0.3. Confidence interval for u when o is known X+Zo Confidence interval for u when o is unknown Xits df = n-1 Confidence interval for proportion p p+z p(1-p) n 3. 20 students were asked how many units they were taking at a community college 5 5 5 8 9 10 15 10 15 13 15 15 15 16 18 19 20 21 22 24 a. Calculate the sample mean. This is a point estimator for the population mean, H. Explain what this means. b. Find a 95% confidence interval for the population mean, assuming o = 5. Calculate and explain the margin of error c. Find a 99% confidence interval for the population mean, assuming o = 5. Interpret the interval and explain why the margin or error for the 99% confidence interval is wider than the 95% confidence interval calculated in question 2. 4. Microwave Ovens: In a random sample of 5 microwave ovens, the mean repair cost was $75.00 and the sample standardSafari File Edit View History Bookmarks Window Help Q 8 Sun May 2 8:55 PM deanza.instructure.com + Week 4 Discussion Topic Google Translate Group Work 4 Homework Help - Q&A from Online Tutors - Cour. paragraph docx Download Info X Close Page > DOCX 2 of 2 - ZOOM + Screen Shot Edit 2 2021-05...7.40 PM C. Find a 99% confidence interval for the population mean, assuming o = 5. Interpret the interval and explain why the margin or error for the 99% confidence interval is wider than the 95% confidence interval calculated in question 2. Macintosh HD 4. Microwave Ovens: In a random sample of 5 microwave ovens, the mean repair cost was $75.00 and the sample standard deviation was $12.50. Assume the random variable is normally distributed and use a t-distribution to construct a 95% confidence interval for the population mean /. What is the margin of error of the confidence interval? DOCX chapter4 5. Stressful Travel: In a survey of 3,224 U.S. adults, 1515 said flying is the most stressful form of travel. Construct and DOCX interpret a 95% confidence interval for the proportion of all adults who say flying is the most stressful form of travel. final draft 6. Refer to the Research Report "An analysis of monthly home range size in the critically endangered California Condor", Screen Shot which is linked on the Assignment page. This research reported 95% confidence intervals of the size of the Condor's 2021-05...7.10 PM habitat (in hectares), broken down by various classification criteria. (Note: 1 hectare = 10000 square meters or about 2.5 acres). These confidence intervals can be found in the Results section of the report, both in text and three graphs comparing the criteria. Make three interpretations of these confidence intervals in short paragraphs. Screen Shot 2021-05...7.28 PM MAY 2 cla Pages 6