C. Find the length of the confidence interval given standard deviation) 1. s = 2.36, n = 350, confidence level: 99%
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- Use the given data to find the 95% confidence interval estimate of the population mean ?μ. Assume that the population has a normal distribution. IQ scores of professional athletes: Sample size ?=10n=10Mean ?⎯⎯⎯=103x¯=103Standard deviation ?=12s=12 <?<<μ<Use sample standard deviation formula to find the standard deviation of these BMI’s: 33.3, 28, 45.4, 28.4 and 25.9.A statistics class is estimating the mean height of all female students at their college. They collect a random sample of 42 female students and measure their heights. The mean of the sample is 65.3 inches and the sample standard deviation is 5.4 inches. Find the 90% confidence interval for the mean height of all female students in their school? Assume that the distribution of individual female heights at this school is approximately normal. 1. The t value is 1.3025 2. The standard error has a value of -- 3. The margin of error has a value of 4. Find the 90% confidence interval for the mean height of all female students in their school
- Construct the indicated confidence interval for the population mean u using the t-distribution. Assume the population is normally distributed.c=0.95, x=14.6, s=2.0, n=5Assume that adults have IQ scores that are normally distributed with a mean of 104.5 and a standard deviation 24.7. Find the first quartile Q,. which is the IQ score separating the bottom 25% from the top 75%. (Hint Draw a graph.) The first quartile is (Type an integer or decimal rounded to one decimal place as needed.)Claim: The standard deviation of pulse rates of adult males is more than 12 bpm. For a random sample of 172 adult males, the pulse rates have a standard deviation of 11.5 bpm. Find the value of the test statistic?
- all 3 parts pleaseplease make your answers clearAssume that adults have IQ scores that are normally distributed with a mean of 100.9 and a standard deviation 19.5. Find the first quartile Q1, which is the IQ score separating the bottom 25% from the top 75%. (Hint Draw a graph.) The first quartile is (Type an integer or decimal rounded to one decimal place as needed.)
- Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96Construct the indicated confidence interval for the population mean y using the t- distribution. Assume the population is normally distributed. C=0.99, x=12.6, s= 0.81, n=17SEE MORE QUESTIONS