Suppose That a Group of 100 Consumers Are Asked to Rate

question 12

Multiple Choice

Suppose that a group of 100 consumers are asked to rate how much they liked the taste of a new soft drink on a 5-point scale (where 5 = good taste and 1 = poor taste) . The mean rating was 4.6, with a standard deviation of 1.25. Suppose, further, that the standard error of the mean for this study was 0.15. If you wanted to find the 95 per cent confidence interval (two-tailed test) , and if the Z-value at the .05 level of significance is 1.96, then the confidence interval lies between approximately:

• A) 4.45 and 4.75.
• B) 4.31 and 4.89.
• C) 4.36 and 4.85.
• D) 4.57 and 4.63.

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Definitions:

Chromosomes

Long strands of DNA wrapped around proteins, located in the cell nucleus, which carry genetic information.

Pluripotent

The ability of a stem cell to differentiate into any type of cell in the body but not capable of forming an entire organism.

Totipotent

Cells that have the potential to differentiate into any type of cell in an organism, including the placental cells.

Differentiated

A state in which cells have developed specialized functions and characteristics, differing from their originating stem cells.