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Claim: Fewer than 96​% of adults have a cell phone. In a reputable poll of 1196...

Claim: Fewer than 96​% of adults have a cell phone. In a reputable poll of 1196 ​adults, 86​% said that they have a cell phone. Find the value of the test statistic. The value of the test statistic is. ​(Round to two decimal places as​ needed.)

​Claim: The mean pulse rate​ (in beats per​ minute) of adult males is equal to 69 bpm. For a random sample of 138 adult​ males, the mean pulse rate is 69.9 bpm and the standard deviation is 11.41bpm. Find the value of the test statistics

The value of the test statistic is

​(Round to two decimal places as​ needed.)

​Claim: The standard deviation of pulse rates of adult males is more than 11bpm. For a random sample of 155 adult​ males, the pulse rates have a standard deviation of 12.3 bpm. Find the value of the test statistic.

The value of the test statistic is

​(Round to two decimal places as​ needed.)

Math   Statistics-And-Probability   
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