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.

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Quadratic Equation

When it comes to the concept of polynomial equations, quadratic equations can be said to be a special case. What does solving a quadratic equation mean? We will understand the quadratics and their types once we are familiar with the polynomial equations and their types.

Demand and Supply Function

The concept of demand and supply is important for various factors. One of them is studying and evaluating the condition of an economy within a given period of time. The analysis or evaluation of the demand side factors are important for the suppliers to understand the consumer behavior. The evaluation of supply side factors is important for the consumers in order to understand that what kind of combination of goods or what kind of goods and services he or she should consume in order to maximize his utility and minimize the cost. Therefore, in microeconomics both of these concepts are extremely important in order to have an idea that what exactly is going on in the economy.