10. Claim: A minority of adults would erase all of their personal information online if they could. A software firm survey of 489 randomly selected adults showed that 37% of them would erase all of their personal information online if they could. Complete parts (a) and (b) below. a. Express the original claim in symbolic form. Let the parameter represent the adults that would erase their personal information.
11. Claim: The mean pulse rate (in beats per minute) of adult males is equal to 69 bpm. For a random sample of 150 adult males, the mean pulse rate is 69.8 bpm and the standard deviation is 11.2 bpm. Complete parts (a) and (b) below. a. Express the original claim in symbolic form.
12. Claim: The standard deviation of pulse rates of adult males is less than 10 bpm. For a random sample of 144 adult males, the pulse rates have a standard deviation of 8.6 bpm. Complete parts (a) and (b) below. a. Express the original claim in symbolic form.
13. Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 570 randomly selected adults showed that 64% of them would erase all of their personal information online if they could. Find the value of the test statistic. The value of the test statistic is .
14. Claim: Fewer than 94% of adults have a cell phone. In a reputable poll of 1002 adults, 88% said that they have a cell phone. Find the value of the test statistic. The value of the test statistic is
15. Claim: The mean pulse rate (in beats per minute) of adult males is equal to 69 bpm. For a random sample of 145 adult males, the mean pulse rate is 70.2 bpm and the standard deviation is 10.6 bpm. Find the value of the test statistic. The value of the test statistic is
16. Claim: The standard deviation of pulse rates of adult males is more than 12 bpm. For a random sample of 154 adult males, the pulse rates have a standard deviation of 13.4 bpm. Find the value of the test statistic. The value of the test statistic is
19. The test statistic of z=−3.20 is obtained when testing the claim that p<0.63. a. Using a significance level of α=0.01, find the critical value(s). b. Should we reject H0 or should we fail to reject H0? Click here to view page 1 of the standard normal distribution table…. Click here to view page 2 of the standard normal distribution table…. a. The critical value(s) is/are z=
20. The test statistic of z=−1.91 is obtained when testing the claim that p=3/5. a. Using a significance level of α=0.01, find the critical value(s). b. Should we reject H0 or should we fail to reject H0? Click here to view page 1 of the standard normal distribution table…. Click here to view page 2 of the standard normal distribution table…. a. The critical value(s) is/are z=
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