Construct the confidence interval for the population mean p. c= 0.95, x= 5.7, o = 0.5, and n= 57 A 95% confidence interval for u is ( D. (Round to two decimal places as needed.)
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- Construct the confidence interval for the population mean μ. c=0.98, x=7.7, σ=0.3, and n= 47 A 98% confidence interval for μ is ?Construct the indicated confidence interval for the population mean using the t-distribution. Assume the population is normally distributed. c=0.95, x=12.9, s=4.0 n=5Construct the indicated confidence interval for the population mean using the t- distribution. Assume the population is normally distributed. C=0.90, x=13.7, s= 4.0, n=7
- Construct the confidence interval for the population mean μ. c=0.98, x=16.6, σ=7.0, and n= 70 A 98% confidence interval for μ is ?Construct the confidence interval for the population mean μ. c=0.95, x=7.3, σ=0.6, and n=51 A 95% confidence interval for μ is ,. (Round to two decimal places as needed.)Suppose you take a random sample of n = 80 Douglas College students and ask each student their age. You find that the mean age of students in this sample is X = 22.0375 years and the sample standard deviation is s = 3.2014 years. Fill in the blanks (rounding to four decimal places): The 95% confidence interval for the mean age μ of all Douglas College students is from ______ years to ______ years.
- Use technology to construct the confidence intervals for the population variance o2 and the population standard deviation o. Assume the sample is taken from a normally distributed population. c= 0.95, s= 34, n= 17 ..... The confidence interval for the population variance is (Round to two decimal places as needed.)A standardized math test of fifth grade students produces a mean ?μ = 100 with a ?σ = 18. A sample of n = 36 students participated in "boost" training for their math skills. The sample M = 104 with S = 24. Did this "boost" training significantly improve students' math performance? Use ?α = .01.Tina catches a 14-pound bass. She does not know the population mean or standard deviation. So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds. Find the t and calculate a 95% (α = .05) confidence interval.
- 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 schoolConstruct 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=5Construct the confidence interval for the population mean μ. c=0.98, x=15.9, σ=9.0, and n=90 A 98% confidence interval for μ is ,. (Round to one decimal place as needed.)