Here are summary statistics for randomly selected weights of newborn girls: n=170, x= 27.6 hg, s= 6.3 hg. Construct a confidence interval estimate of the mean.Use a 95% confidence level. Are these results very different from the confidence interval 26.0 hg <µ< 28.4 hg with only 12 sample values, x= 27.2 hg, and s = 1.9hg?HWhat is the confidence interval for the population mean u?hg

Given information: The sample size is n=170. The sample mean is x¯=27.6. The sample standard…

Answered: Here are summary statistics for…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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We have developed a new drug used to reduce fever and want to test its efficacy. Ten ER patients who are running a fever agree to take the new drug instead of the traditional treatment. Their temperatures are taken before the drug is administered and 30 minutes after taking the drug. The results are recorded in the Excel file below. Use the data to construct and interpret a 99% confidence interval for the mean change in temperatures of patients after taking this drug using Excel. Be sure to include any explanation necessary along with a sentence that explains what the interval means. First Temp Second Temp 100.1 98.9 101.3 99.1 102.1 99.2 102.7 99 101.9 98.7 100.8 98.6 103.1 99.4 102.5 99.2 103.5 100.1 101.7 99.2
Here are summary statistics for randomly selected weights of newborn girls: n=157, x=29.4 hg, s=6.7 Construct a confidence interval estimate of the mean. Use a 95% confidence level. Are these results very different from the confidence interval 28.8 hg<μ<31.0 hg with only 20 sample values, x=29.9 hg, and s=2.4 hg? What is the confidence interval for the population mean μ? nothing hg<μ<nothing hg (Round to one decimal place as needed.)
Here are summary statistics for randomly selected weights of newborn girls: n= 190, x 32.9 hg, s= 6.2 hg. Construct a confidence interval estimate of the mean. Use a 95% confidence level. Are these results very different from the confidence interval 31.4 hg
Here are summary statistics for randomly selected weights of newborn girls: n=196, x=28.2 hg, s=7.8 hg. Construct a confidence interval estimate of the mean. Use a 98% confidence level. Are these results very different from the confidence interval 25.9 hg<μ<30.7 hg with only 15 sample values, x=28.3 hg, and s=3.5 hg? What is the confidence interval for the population mean μ? I can't get my numbers to jive please help!!
Here are summary statistics for randomly selected weights of newborn girls: n= 240, x= 31.8 hg, s=7.9 hg. Construct a confidence interval estimate of the mean. Use a 99% confidence level. Are these results very different from the confidence interval 29.1 hg < u< 34.7 hg with only 15 sample values, x= 31.9 hg, and s = 3.6 hg? What is the confidence interval for the population mean u? |hg < u< hg (Round to one decimal place as needed.)
Suppose you work for the Department of Environment and National Resources (DENR). You want to estimate, with 95% confidence, the mean length of all tilapia in a fish hatchery pond. You take a random sample of 10 tilapia and determine the average length is 10.5 inches and the sample standard deviation is 2.9 inches. Construct a confidence interval for this sample and interpret the result.
During the nutrition research, the amount of consumed kilocalories per day was measured for 18 people - 10 women and 8 men. Results are as follows: Women: 1624, 1608, 2003, 1654, 1907, 1636, 1924, 1868, 1578, 2010; Men: 2360, 2547, 2524, 2056, 2172, 2464, 2253, 1954. Calculate a 95% confidence interval on the mean for women and men separately. Assume distribution to be normal. Round your answers to the nearest integer (e.g. 9876). Women: i i Men: i
The mean score on the math portion of the ACT for the year 2000 is μ = 20.7. A sample of 20 students in a local school district had a mean of 22.95. Using the sample, a 95% confidence interval estimate for the mean is (20.76, 25.14). State the point estimate for the mean ACT score for students. Based on this sample information , do you believe that the local students have a mean different from the general population? Why? 22.95 is in the center of the interval. The means are definitely not different. 22.95 is just outside the 95% confidence interval. Can't say the means are really different. 22.95 is not equal to 20.7. The means are definitely different. 20.7 is just outside the 95% confidence interval. Can't say the means are really different.
Here are summary statistics for randomly selected weights of newborn girls: n=217, x=31.7hg, s=6.5hg. Construct a confidence interval estimate of the mean. Use a 98% confidence level. Are these results very different from the confidence interval 29.6hg<μ<32.6hg with only 17 sample values, x=31.1hg, and s=2.4hg? What is the confidence interval for the population mean μ? hg < μ < hg (Round to one decimal place as needed.)
Assume that the 95% confidence interval for mean=9 and standard devaition=20. For a particular data, the standardized value z = 2.73. We can say that: Select one: a. The data with standardized value 2.73 does not belong to the confidence interval and the value is less than the average. b. The data with standardized value 2.73 does not belong to the confidence interval and the value is greater than the average. c. Cannot interpret the z-value information provided. d. The data with standardized value 2.73 if it belongs to the confidence interval and the value is less than the average. e. The data with standardized value 2.73 if it belongs to the confidence interval and the value is greater than the average.
Here are summary statistics for randomly selected weights of newborn girls: n = 171, x = 29.8 hg, s = 6.8 hg. Construct a confidence interval estimate of the mean. Use a 95% confidence level. Are these results very different from the confidence interval 28.0 hg
Here are summary statistics for randomly selected weights of newborn girls: n=191, x=28.9 hg, s =7.8hg. Construct a confidence interval estimate of the mean. Use a 90% confidence level. Are these results very different from the confidence interval 27.1 hg<u<30.5 hg with only 13 sample values, x=28.8 hg, and s=3.5 hg? What is the confidence interval for the population mean u? Are the results between the two confidence intervals very different?

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