In a Gallup Poll of 1018 adults, it was found that 22% smoked cigarettes in the
ID: 2914073 • Letter: I
Question
In a Gallup Poll of 1018 adults, it was found that 22% smoked cigarettes in the past week. Use a .05 significance level to test the claim that less than 25% of adults hae smoked within the last week.
What is the test statistic and the conclustion?
Test stat z = 2.21
Critical value: z = -1.645
Fail to Reject Ho; There is not sufficient evidence to support the claim that less than 25% of adults have smoked within the past week.
Test stat z = -1.645
Critical value: z = -2.21
Fail to Reject Ho; There is sufficient evidence to support the claim that less than 25% of adults have smoked within the past week.
In a Gallup Poll of 1018 adults, it was found that 22% smoked cigarettes in the past week. Use a .05 significance level to test the claim that less than 25% of adults hae smoked within the last week.
What is the test statistic and the conclustion?
Test stat z = 2.21
Critical value: z = -1.645
Fail to Reject Ho; There is not sufficient evidence to support the claim that less than 25% of adults have smoked within the past week.
Test stat z = -1.645
Critical value: z = -2.21
Fail to Reject Ho; There is sufficient evidence to support the claim that less than 25% of adults have smoked within the past week.
x.i5 '<>x.i5e="2">Test stat z = -2.21 Assume that a random sample has been selected from a normally distributed population. Find the test statistic, critical values and state the final conclusion. Test the claim that for the adult population of one town, the mean annual salary is given by u = $30,000. Sample data are summarized as n=17, = $22,298, and s = $14,200. Use a significance level of ? = .05 Test stat t = -2.236, Critical value t = +2.120, We reject the Null Hypothesis. There is sufficient evidence to warrant rejection of the claim that u = $30,000 Test stat t = -2.236, Critical value t = +2.120, We Fail reject the Null Hypothesis. There is not sufficient evidence to warrant rejection of the claim that u = $30,000 Test stat t = -2.120, Critical value t = +2.236, We reject the Null Hypothesis. There is sufficient evidence to warrant rejection of the claim that u = $30,000 Test stat t = 2.120, Critical value t = 2.236, We reject the Null Hypothesis. There is sufficient evidence to warrant rejection of the claim that u = $30,000 In a Gallup Poll of 1018 adults, it was found that 22% smoked cigarettes in the past week. Use a .05 significance level to test the claim that less than 25% of adults hae smoked within the last week. What is the test statistic and the conclustion? Test stat z = 2.21 Critical value: z = -1.645 Fail to Reject Ho; There is not sufficient evidence to support the claim that less than 25% of adults have smoked within the past week. Test stat z = -1.645 Critical value: z = -2.21 Fail to Reject Ho; There is sufficient evidence to support the claim that less than 25% of adults have smoked within the past week.
Explanation / Answer
In a Gallup Poll of 1018adults, it was found that 22% smoked cigarettes in the pastweek. Use a .05 significance level to test the claim that lessthan 25% of adults hae smoked within the last week.
Test stat z = -2.21
Critical value: z = -1.645
RejectHo; There is sufficient evidence to support the claim that lessthan 25% of adults have smoked within the pastweek.
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