Presented with recordings of a pair of people of the same sex speaking the same phrase,...

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Presented with recordings of a pair of people of the same sex speaking the same phrase, can a listener determine which speaker is taller simply from the sound of their voice? Twenty-four young adulte at Washington University listened to 100 pairs of speakers and, within cach pair were asked to indicate which of the two speakere was the taller. The number correct out of 100 for cach of the 24 participants io listed. Note: The numerical values in this problem have been modified for teeting purposes 68 48 66 58 69 70 65 56 68 56 58 72 rchere believe that the key to orrect diserimination is contained in a partiular type of sound produced in the lower as subglottal resonances, whose frequenoy is lower for taller people. Despite the masking of airways or the lunge, known these resonances by other voice sounds, researchers wondered whether the information they contained could still be heard by listeners and used to identify the taller pereon.

Are there any outliers? Select an answer choice. O No O Yes: 48,70, and 72 O Yes: 48 O Yes: 48 and 52 (o) If the experimental subjects are just guessing which speaker is taller, they should correctly identfy the taller pers about 50% of the time. Does this data support the researchers conjecture that there is information in a persons voice to help identify the taller person? Why or why not? Select an answer choice. O Yes, it would appear that a persons voice does help identify the taller peron. If subjects were just gueesing, we O Yes, it would appear that a persons voice does help identify the taller persmon. If eubjects were just guessing. O No, it would appear that a persons voice does not help identify the taller person. If subjects were just guesing O It is impossible to make a conclusion based on the given data. would expect the distribution to center about 50, but the center here is much higher would expect the distribution to be approximately symmetric, but here it is skewed. we would expect the distribution to center about 50, and the center here is not far off from that

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Answer 1

Answer #1

Arangina tha datoa 10 obs 58 Thind Quartilo-93 3N) 3x25 (8.15 4 2. z 62.5 5125 Llppeh Limoit Bat s) .2.5 51:25 nik- 69.25 o 72 Option 2

c) Ans: Option 3

If a person's voice help identify the taller person, then we expect more than 50% of correct choices/guesses. But if he's actually guessing then the number of correct and incorrect guesses will be expected to be equal.

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Answer 2

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Presented with recordings of a pair of people of the same sex speaking the same phrase,...

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