. Calculate the Z-test statistic using the standard error from part a. z= Tests the claim that 41 < p2. Assume the samples are random and independent.0.87; 02 =0.86= 35.32 ; 2 = 35.64n1 = 41 ; n2 = 31Standard ErrorZ-Test Statistic(71- 72) - (41 – 42)n2『ューエ

Given : n1=41 , n2=31 , X1-bar=35.32 , X2-bar=35.64 , σ1=0.87 , σ2=0.86 Our aim is to find the…

Answered: Calculate the Z-test statistic using…

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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(c) After you obtain your ten observations, you compute the mean number of hours of sleep. Is this a statistic or a parameter? Why?
Data on the weights (Ib) of the contents of cans of diet soda versus the contents of cans of the regular version of the soda is summarized to the right. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.01 significance level for both parts. Diet Regular H2 27 27 0.79037 lb 0.80399 lb 0.00449 lb 0.00756 lb a. Test the claim that the contents of cans of diet soda have weights with a mean that is less than the mean for the regular soda. What are the null and alternative hypotheses? O A. Ho: H1 = H2 OB. Ho: H1#H2 Hq: Hy
Got stuck, and wasn’t sure what to do.
Mean median and std dev. As well as the standard deviation of the white bread
It is only appropriate and possible to calculate the variance and standard deviation as measures of variability for variables measured using a(n) _____ scale of measurement.
I attached.
The mean annual tuition and fees for a sample of 14 private colleges in California was $ 37,900 with a standard deviation of $7200 . A dotplot shows that is reasonable to assume that the population is approximately normal. Can you conclude that the mean tuition and fees for private institutions state the null and alternative compute the value of the t statuistic ,. How many degrees of freedom state your conclusion
What is the value of n (the number of observations)? What is the value of Se (standard error for the model) (2 decimals)? What is the average of the x variable (2 decimals)? What is the variance of the x variable (1 decimal)?
Are the mean number of times a month a person eats out the same for whites, blacks, Hispanics and Asians? Suppose that the table below shows the results of a study. White Black Hispanic Asian 5 4 8 9 8 1 3 3 2 5 5 5 4 2 4 1 6 6 7 Assume that all distributions are normal, the four population standard deviations are approximately the same, and the data were collected independently and randomly. Use a level of significance of 0.05. (Let 1 = White, 2 = Black, 3 = Hispanic, and 4 = Asian.) Part (a) State the null hypothesis. H0: ?1 = ?2 = ?3 = ?4 H0: At least two of the group means ?1, ?2, ?3, ?4, are not equal. Part (b) State the alternative hypothesis. Ha: At least two of the group means ?1, ?2, ?3, ?4, are not equal. Ha: ?1 = ?2 = ?3 = ?4 Part (c) Enter an exact number as an integer, fraction, or decimal. df(num) = Part (d) Enter an exact number as an integer, fraction, or decimal. df(denom) = Part (e) State the…

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