It was claimed recently that more than 55% of high school students in the United States use computers for educational purposes. We wish to examine this claim. We choose a random sample of 225 U.S. high school students and find that 133 of these students use computers for educational purposes. Based on this can we conclude, at the 0.05 level of significance, that more than 55% of high school students in the United States use computers for educational purposes? In your answers, denote the proportion of all U.S. high school students who happen to use computers for educational purposes by p. Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.) (a) State the null hypothesis H and the alternative hypothesis H1. H, :0 H: (b) Determine the type of test statistic to use. (Choose one) D=0 OSO (c) Find the value of the test statistic. (Round to three or more decimal places.) (d) Find the critical value. (Round to three or more decimal places.) (e) Can we conclude that more than 55% of high school students in the United States use computers for educational purposes? OYes ONo
It was claimed recently that more than 55% of high school students in the United States use computers for educational purposes. We wish to examine this claim. We choose a random sample of 225 U.S. high school students and find that 133 of these students use computers for educational purposes. Based on this can we conclude, at the 0.05 level of significance, that more than 55% of high school students in the United States use computers for educational purposes? In your answers, denote the proportion of all U.S. high school students who happen to use computers for educational purposes by p. Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.) (a) State the null hypothesis H and the alternative hypothesis H1. H, :0 H: (b) Determine the type of test statistic to use. (Choose one) D=0 OSO (c) Find the value of the test statistic. (Round to three or more decimal places.) (d) Find the critical value. (Round to three or more decimal places.) (e) Can we conclude that more than 55% of high school students in the United States use computers for educational purposes? OYes ONo
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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Transcribed Image Text:It was claimed recently that more than 55% of high school students in the United States use computers for educational purposes. We wish to examine this
claim. We choose a random sample of 225 U.S. high school students and find that 133 of these students use computers for educational purposes. Based on this,
can we conclude, at the 0.05 level of significance, that more than 55% of high school students in the United States use computers for educational purposes? In
your answers, denote the proportion of all U.S. high school students who happen to use computers for educational purposes by p.
Perform a one-tailed test. Then complete the parts below.
Carry your intermediate computations to three or more decimal places and round your answers as specified in the table. (If necessary, consult a list of
formulas.)
(a) State the null hypothesis H, and the alternative hypothesis H.
Ho:
H :
(b) Determine the type of test statistic to use.
(Choose one) ▼
ローロ
ロsO
(c) Find the value of the test statistic. (Round to three or more decimal places.)
ロ+ロ
O<O
(d) Find the critical value. (Round to three or more decimal places.)
(e) Can we conclude that more than 55% of high school students in the United
States use computers for educational purposes?
O Yes O No
の
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