Calculate the 95% margin of error in estimating a population mean for the following values. (Round your answer to three decimal places.) n = 30,² = 1.2
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- TEN ENGINEERING STUDENTS HAVE THE FF. HEIGHTS (IN FT): 5.2 5.8 6.2 4.8 4.9 5.11 5.9 4.11 5.6 DETERMINE THE 70TH PERCENTILE (USE THE EXACT ANSWER, DO NOT INCLUDE THE UNIT) 5.9You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the population proportion. You would like to be 95% confident that you esimate is within 0.5% of the true population proportion. How large of a sample size is required?n =The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 118 and standard deviation of 15. Someone qualifies as having Stage 2 high blood pressure if their systolic blood pressure is 160 or higher. a. Around what percentage of adults in the USA have stage 2 high blood pressure? Give your answer rounded to two decimal places. % b. If you sampled 2000 people, how many would you expect to have BP> 160? Give your answer to the nearest person. Note:I had a bit of an issue encoding rounded answers, so try rounding both up and down if there's an issue! people 24 31 3 3 c. Stage 1 high BP is specified as systolic BP between 140 and 160. What percentage of adults in the US qualify for stage 1? 3 3 3 . 96
- You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the population proportion. You would like to be 95% confident that your estimate is within 3% of the true population proportion. How large of a sample size is required? n =Round to two decimal places as needed.Estimate the average mark in an exam using the following table: Marks Total Percentage of Students (Type your final answer in decimal form.) Answer: 0-10 0- < 20 0-< 30 0- <400- <50 0.14 0.26 0.56 0.8 1
- The state education commission wants to estimate the fraction of tenth grade students that have reading skills at or below the eighth grade level. Step 2 of 2: Suppose a sample of 310 tenth graders is drawn. Of the students sampled, 46 read at or below the eighth grade level. Using the data, construct the 85% confidence interval for the population proportion of tenth graders reading at or below the eighth grade level. Round your answers to three decimal places.What percent of our campus is female? If no preliminary study is made to estimate, how large a sample is needed be 99% sure that the error will be no more than 0.03 from? 1852 Students 1849 Students 1838 students 1826 studetnsyour car is more crowded than you think. table 5.8 reports results from a 1969 personal transportation survey on "home-to-work" trips in metropolitan areas. The survey stated that the average car occupancy was 1.4 people. check that calculation.