The Institute of Education Sciences measures the high school dropout rate as the percentag of 16- through 24-year-olds who are not enrolled in school and have not earned a high schod credential. Last year, the high school dropout rate was8.1%. A polling company recently to0 a survey of 1,000 people between the ages of 16 and 24 and found that 6.5% of them arn high school dropouts. The polling company would like to determine whether the dropout rat has decreased. At a 5% significance level, the decision is to A. reject Ho; we can condude that the high school dropout rate has decreased B. reject Ho; we cannot conclude that the high school dropout rate has decreased C. do not reject Ho; we can conclude that the high school dropout rate has decreased D. do not reject Ho, we cannot condude that the high school dropout rate has decreased

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12. The Institute of Education Sciences measures the high school dropout rate as the percentage
of 16- through 24-year-olds who are not enrolled in school and have not earned a high schoo
credential. Last year, the high school dropout rate was8.1%.A polling company recently took
a survey of 1,000 people between the ages of 16 and 24 and found that 6,5% of them are
high school dropouts. The polling company would like to determine whether the dropout rate
has decreased. At a 5% significance level, the decision is to
A, reject H,, we can condude that the high school dropout rate has decreased
B. reject H,; we cannot conclude that the high school dropout rate has decreased
C. do not reject Ho; we can conclude that the high school dropout rate has decreased
D. do not reject Ho; we cannot condude that the high school dropout rate has
decreased
Transcribed Image Text:12. The Institute of Education Sciences measures the high school dropout rate as the percentage of 16- through 24-year-olds who are not enrolled in school and have not earned a high schoo credential. Last year, the high school dropout rate was8.1%.A polling company recently took a survey of 1,000 people between the ages of 16 and 24 and found that 6,5% of them are high school dropouts. The polling company would like to determine whether the dropout rate has decreased. At a 5% significance level, the decision is to A, reject H,, we can condude that the high school dropout rate has decreased B. reject H,; we cannot conclude that the high school dropout rate has decreased C. do not reject Ho; we can conclude that the high school dropout rate has decreased D. do not reject Ho; we cannot condude that the high school dropout rate has decreased
13, An advertisement for a
a popular weight-loss clinic suggests that participants in its new diet
program lose, on average, more than 10 pounds. A consumer activist decides to test the
authenticity of the daim, She follows the progress of 18 women who recently joined the
weight-reduction program, She calculates the mean weight loss of these participants as 10.8
pounds with a standard deviation of 2.4 pounds. The test statistic for this hypothesis would
be
A. 1.41
B. -1.41
C 1,74
DAS-1.74
Transcribed Image Text:13, An advertisement for a a popular weight-loss clinic suggests that participants in its new diet program lose, on average, more than 10 pounds. A consumer activist decides to test the authenticity of the daim, She follows the progress of 18 women who recently joined the weight-reduction program, She calculates the mean weight loss of these participants as 10.8 pounds with a standard deviation of 2.4 pounds. The test statistic for this hypothesis would be A. 1.41 B. -1.41 C 1,74 DAS-1.74
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