22. In 2005, Health Canada claimed that 16.8% of Canadian adults are obese. A researcher wanted to check whether this percentage has changed in 2009. In 2009, he randomly selected 215 Canadian adults and found 31 of them are obese. Use a 7% significance level. The decision rule is a)Reject Ho if Zcalc > 1.81 b)Reject H0 if Zcalc < -1.48 or Zcalc > 1.48 c)Reject Ho if Zcalc > 1.48 d)Reject H0 if Zcalc < -1.81 or Zcalc > 1.81

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Description: 22. In 2005, Health Canada claimed that 16.8% of Canadian adults are obese. A researcher wanted to check whether this percentage has changed in 2009. In 2009, he randomly selected 215 Canadian adults and found 31 of them are obese. Use a 7% significa

A researcher wanted to check whether this percentage has changed in 2009. It is a two tailed test.

Answered: In 2005, Health Canada claimed that…

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22.

In 2005, Health Canada claimed that 16.8% of Canadian adults are obese. A researcher wanted to check whether this percentage has changed in 2009. In 2009, he randomly selected 215 Canadian adults and found 31 of them are obese. Use a 7% significance level. The decision rule is

a)
Reject Ho if Zcalc > 1.81

b)
Reject H0 if Zcalc < -1.48 or Zcalc > 1.48

c)
Reject Ho if Zcalc > 1.48

d)
Reject H0 if Zcalc < -1.81 or Zcalc > 1.81

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