Question

Claim: A majority of adults would erase all of their personal information online if they could. A software firm survey of 499 randomly selected adults showed that 65% 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. (Type an integer or a decimal. Do not round.) b. Identify the null and alternative hypotheses. Ho- H: (Type integers or decimals. Do not round.) 7

Answer 1

Answer: 1) From the given data, a) P70.65 b) wool and alternative hypothesis: Ho: P = 0.65 HQ :P>0.65 Note: Ho P<0.65 also possible. 2) From the girendata, X=EX 101 +83+ +52 - 68.66 50 s={(xi-72 (52-6866) + (101-68.66)*+ +83-6866)** 49 is-21.42 Hypothesis Hoi l = 73bpm HQ : M <73bpm Test Statistic: X-M t = SNO 68.66-73 21.421.50 =-1.433 P-value: P(t >1.433) = 0.0791 Decisios P-value > alo-os). so we fail to reject noll bypothesis. conclusion: there is not sufficient evidence to conclude that the mean of the population of pulse rates for adults females less than 73 thank you