Newspaper headlines recently announced a decline in science scores among high school seniors. In 2015, 15,109 seniors tested by The National Assessment in Education Program (NAEP scored a mean of 147 points In 2000, 7537 seniors had averaged 150 points. The standard error of the difference in the mean scores for the two groups was 1.22. a) State the null and alternative hypotheses in terms of the appropriate parameter. Ho: p1 - p2 HA: H1 - µ2 b) The point estimate is c) The test statistic is ? (If necessary, round your answer to the nearest hundredth.) II

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Newspaper headlines recently announced a decline in science scores among high school seniors. In 2015,
15,109 seniors tested by The National Assessment in Education Program (NAEP scored a mean of 147 points.
In 2000, 7537 seniors had averaged 150 points. The standard error of the difference in the mean scores for
the two groups was 1.22.
a) State the null and alternative hypotheses in terms of the appropriate parameter.
Ho: p1 - µ2
HA: H1 - µ2
b) The point estimate is
c) The test statistic is ? v
. (If necessary, round your answer to the nearest
hundredth.)
d) The p-value is
e) The correct decision is to Select an answer
| the null hypothesis.
f) There is Select an answer
evidence that scores have decreased between 2000 and 2015.
g) We are 95% confident that the mean score has decreased by between
and
points between 2000 and 2015. (If necessary, round your answers to the nearest
hundredth.)
Transcribed Image Text:Newspaper headlines recently announced a decline in science scores among high school seniors. In 2015, 15,109 seniors tested by The National Assessment in Education Program (NAEP scored a mean of 147 points. In 2000, 7537 seniors had averaged 150 points. The standard error of the difference in the mean scores for the two groups was 1.22. a) State the null and alternative hypotheses in terms of the appropriate parameter. Ho: p1 - µ2 HA: H1 - µ2 b) The point estimate is c) The test statistic is ? v . (If necessary, round your answer to the nearest hundredth.) d) The p-value is e) The correct decision is to Select an answer | the null hypothesis. f) There is Select an answer evidence that scores have decreased between 2000 and 2015. g) We are 95% confident that the mean score has decreased by between and points between 2000 and 2015. (If necessary, round your answers to the nearest hundredth.)
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