In a Sample of 200 Racquetball Players, 120 Indicated They

question 44

Essay

In a sample of 200 racquetball players, 120 indicated they prefer Penn racquetballs, 75 favored Ektelon, and 5 were indifferent. We want to use the sign test to determine if there is evidence of a significant difference in the preferences for the two types of racquetballs.
a.Provide the hypotheses to be tested.
b.Compute the mean.
c.Compute the standard deviation.
d..
At 95% confidence, test to determine if there is evidence of a significant difference in the preferences for the two types of racquetballs.

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Definitions:

Bluetooth

A wireless technology standard for exchanging data over short distances between fixed and mobile devices, creating personal area networks.

NFC

Near Field Communication, a set of communication protocols that enable two electronic devices, one of which is usually a portable device such as a smartphone, to establish communication by bringing them within 4 cm of each other.

RFID

Radio-frequency identification, a technology using electromagnetic fields to automatically identify and track tags attached to objects.

Mobile Health App (mHealth)

A mobile application designed to offer health-related services and information via smartphones, tablets, or wearable devices.