A communications company has developed three new designs for a cell phone. To evaluate consumer response, a sample of 120 college students is selected, and each student is given all three phones to use for one week. At the end of the week, the students must identify which of the three designs they prefer. The distribution of preferences is as follows. Design 1 Design 2 Design 3 54 38 28 Chi-Square Distribution ips Degrees of Freedom = 16 ps al of TED 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Do the results iindicate any significant preferences among the three designs? Test at the a = .05 level of significance. (Use two decimal places.) | x2 critical value %3D x2 %3D Conclusion: Reject the null hypothesis; there are significant preferences among designs. Fail to reject the null hypothesis; there are significant preferences among designs. Reject the null hypothesis; there are no significant preferences among designs. Fail to reject the null hypothesis; there are no significant preferences amnong designs.

A communications company has developed three new designs for a cell phone. To evaluate consumer response, a sample of 120 college students is selected, and each student is given all three phones to use for one week. At the end of the week, the students must identify which of the three designs they prefer. The distribution of preferences is as follows. Design 1 Design 2 Design 3 54 38 28 Chi-Square Distribution ips Degrees of Freedom = 16 ps al of TED 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Do the results iindicate any significant preferences among the three designs? Test at the a = .05 level of significance. (Use two decimal places.) | x2 critical value %3D x2 %3D Conclusion: Reject the null hypothesis; there are significant preferences among designs. Fail to reject the null hypothesis; there are significant preferences among designs. Reject the null hypothesis; there are no significant preferences among designs. Fail to reject the null hypothesis; there are no significant preferences amnong designs.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 10CYU

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