Question about the internet independent of race

Reference no: EM131008196

The same poll as in Exercise 9 also asked the questions "Did you use the Internet yesterday?" and "Are you White, Black, or Hispanic/Other?" Is the response to the question about the Internet independent of race? The data follow:

id You Use the Internet Yesterday?

Yes No

White Black

Hispanic/Other

2546 856

314 146

431 174

a) Under the null hypothesis, what are the expected values?

b) Compute the x2 statistic.

c) How many degrees of freedom does it have?

d) Find the critical value for a = 0.05.

e) What do you conclude?

Reference no: EM131008196

Questions Cloud

Find the error in the linear approximation : Find the error in the linear approximation to the value of f(3 + 0.06) that we found in part b). Find the percentage that results from approximation f(3 + 0.06) by the value in part b).

Problem regarding the advertised proportions : a) If the M&M's are packaged in the advertised proportions, how many of each color should the author have ex- pected in his bag of M&M's? b) To see if his bag was unusual, should he test goodness- of-fit, homogeneity, or independence?

Determining the degrees of freedom : To see if these results are unusual, will you test goodness- of-fit, homogeneity, or independence? State your hypotheses. Check the conditions. How many degrees of freedom are there?

Chi-square goodness-of-fit test : Concepts. For each of the following situations, state whether you'd use a chi-square goodness-of-fit test, chi- square test of homogeneity, chi-square test of indepen- dence, or some other statistical test.

Question about the internet independent of race : The same poll as in Exercise 9 also asked the questions "Did you use the Internet yesterday?" and "Are you White, Black, or Hispanic/Other?" Is the response to the question about the Internet independent of race? The data follow:

Aspects of child development from the readings : Identify and explain three other aspects of child development from the readings(100 words per each aspects). Describe why these aspects are important to the field of early childhood education.

Calculate the taylor polynomials : Calculate the Taylor polynomials T2 (X) and T3 (X) centered at x = 2 for f(x) = ln(x + 1). Find the formula for a function of the form y = A sin(Bx) + C with a maximum at (4, 3), a minimum at (12, -7).

What is the difference in proportions : a) Find the proportions of those earning at least $50,000 a year and those earning less than $50,000 a year who said they use the Internet. b) What is the difference in proportions?

What is the difference in proportions : a) Find the proportions of men and women who said they use the Internet at least occasionally. b) What is the difference in proportions? c) What is the standard error of the difference?

User Account

All Pages