Construct a 90% confidence interval for u with the sample statistics for mean cholesterol content of a hamburger from two fast food chains and confidence interval constructionformula below. Assume the populations are approximately normal with unequal variances.StatsX, =145 mg, S, =3.62 mg, n, = 193D19X2 = 55 mg, s,3D2.05 mg, n, = 10!!S2Confidence interval whenvariances are not equaln2n2d.f. is the smaller of n -1 or n2-1Enter the endpoints of the interval.-H2 < (Round to the nearest integer as needed.)NextO Type here to search66°F Mostly cloudy ^ED V»2:13 PM11/22/2021ナF7InserF2F3F4F5F6PrtScF8F9F10F11F12&23.6.78+ II2221团今4

We have given that Sample size n1= 19 , n2= 10 Sample mean xbar1= 145 , xbar2 = 55 Standard deviation s1= 3.62 , s2= 2.05

Answered: Construct a 90% confidence interval 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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solve for image and find critical values
You have a sample of 4 pairs from two populations. The mean of the paired differences is 10 and the standard deviation of the differences is 5. Test the hypothesis, at the 5% level of significance, that the population means are the same. State your conclusion as a sentence including the test statistic and the critical value.
An SRS of 29 students at HCC gave an average height of 5.5 feet and a standard deviation of .1 feet. Construct a 90% confidence interval for the mean height of students at HCC.
A simple random sample of 95 basketball players is taken from different teams and their mean weight is found to be 226 pounds and the standard deviation of the population is 20 pounds. Using 0.05 level of significance , test the claim that the average weight for all basketball players is 231 pounds.
It seems these days that college graduates who are employed FT work more than 40-hour weeks. Data are available that can help us decide if this is true. A survey was recently sent to a group of adults selected at random. There were 15 respondents who were college graduates employed FT. The mean number of hours worked per week by these 15 respondents was 44 hours, with a standard deviation of 8 hours. Assume that the population of hours worked per week by college graduates employed FT normally distributed with mean u. Can we conclude that u is greater than 40 hours? Use the 0.1 level of significance. Perform a one-tailed test. Carry intermediate computations to 3 or more decimal places and round answers as specified.
Your research group has been hired to determine if college men and women drink different amounts of soft drinks at Illinois State University. After a careful study, your group has determined that males drink an average of 12 sodas per week with a standard deviation of 3.5 whereas female students drink an average of 9 soft drinks per week with a standard deviation of 2 sodas. The sample size of males is 200 and the sample size of females is 200. Based on this information, your group calculates the z-score to be: [____].
An excess of high values for the cases distributed on a graph results in a positive skew in the data?
When compared with the Pearson correlation, the Spearman correlation coefficient is: Less statistical power when the sample size is <50, True or false?

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