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Get Full Access to Statistics: Informed Decisions Using Data - 5 Edition - Chapter 1 - Problem 13
Get Full Access to Statistics: Informed Decisions Using Data - 5 Edition - Chapter 1 - Problem 13

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# ?In Problems 11–13, classify the variable as qualitative or quantitative. If the variable is quantitative, state whether it is discrete or continuous.

ISBN: 9780134133539 240

## Solution for problem 13 Chapter 1

Statistics: Informed Decisions Using Data | 5th Edition

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Problem 13

In Problems 11–13, classify the variable as qualitative or quantitative. If the variable is quantitative, state whether it is discrete or continuous.

13. Brand name of a pair of running shoes

Step-by-Step Solution:

Step 1 of 5) The rats in group 1 were exposed to the analogue cell phone frequency; the rats in group 2 were exposed to the digital frequency; the rats in group 3 received no radiation. The exposure was done for 4 hours a day, 5 days a week for 2 years. The rats in all three groups were treated the same, except for the RF exposure. After 505 days of exposure, the researchers “. . . found no statistically significant increases in any tumor type, including brain, liver, lung or kidney, compared to the control group.” Source: M. La Regina, E. Moros, W. Pickard, W. Straube, J. L. Roti Roti, “The Effect of Chronic Exposure to 835.62 MHz FMCW or 847.74 MHz CDMA on the Incidence of Spontaneous Tumors in Rats,” Bioelectromagnetic Society Conference, June 25, 2002

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