For this study, we should use     The null and alternative hypotheses would be: z-test for a population proportion or t-test for a population mean  Ho: (p or u)           (please enter a decimal)

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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  1. For this study, we should use    
  2. The null and alternative hypotheses would be: z-test for a population proportion or t-test for a population mean
     Ho: (p or u)           (please enter a decimal)   
     H1:  (p or u)          (Please enter a decimal)
  1. The test statistic z =  (please show your answer to 3 decimal places.)
  2. The critical value =       (Please show your answer to 3 decimal places.)
  3. The test statistic (is or is not)    in the rejection region.
  4. Based on this, we should  (reject or accept or fail to accept)    the null hypothesis.
  5. Thus, the final conclusion is that ...
    • The data suggest the population proportion is not significantly larger 50% at � = 0.05, so there is not sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is larger 50%.
    • The data suggest the populaton proportion is significantly larger 50% at � = 0.05, so there is sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is larger 50%
    • The data suggest the population proportion is not significantly larger 50% at � = 0.05, so there is sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is equal to 50%.
A news article that you read stated that 50% of voters prefer the
Democratic candidate. You think that the actual percent is larger. 30
of the 51 voters that you surveyed said that they prefer the
Democratic candidate. What can be concluded at the 0.05 level of
significance? Use the classical approach.
a. For this study, we should use [Select an answer
b. The null and alternative hypotheses would be:
Ho: ? Select an answer
decimal)
H₁: ? ✓ Select an answer
decimal)
c. The test statistic z =
to 3 decimal places.)
d. The critical value = ?
(please enter a
(Please enter a
(please show your answer
(Please show your
answer to 3 decimal places.)
e. The test statistic Select an answer
f. Based on this, we should [Select an answer the null
hypothesis.
g. Thus, the final conclusion is that ...
in the rejection region.
O The data suggest the population proportion is not
significantly larger 50% at a = 0.05, so there is not
sufficient evidence to conclude that the proportion of
voters who prefer the Democratic candidate is larger
50%.
The data suggest the populaton proportion is
significantly larger 50% at a = 0.05, so there is
sufficient evidence to conclude that the proportion of
voters who prefer the Democratic candidate is larger
50%
The data suggest the population proportion is not
significantly larger 50% at a = 0.05, so there is
sufficient evidence to conclude that the proportion of
voters who prefer the Democratic candidate is equal to
50%.
Transcribed Image Text:A news article that you read stated that 50% of voters prefer the Democratic candidate. You think that the actual percent is larger. 30 of the 51 voters that you surveyed said that they prefer the Democratic candidate. What can be concluded at the 0.05 level of significance? Use the classical approach. a. For this study, we should use [Select an answer b. The null and alternative hypotheses would be: Ho: ? Select an answer decimal) H₁: ? ✓ Select an answer decimal) c. The test statistic z = to 3 decimal places.) d. The critical value = ? (please enter a (Please enter a (please show your answer (Please show your answer to 3 decimal places.) e. The test statistic Select an answer f. Based on this, we should [Select an answer the null hypothesis. g. Thus, the final conclusion is that ... in the rejection region. O The data suggest the population proportion is not significantly larger 50% at a = 0.05, so there is not sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is larger 50%. The data suggest the populaton proportion is significantly larger 50% at a = 0.05, so there is sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is larger 50% The data suggest the population proportion is not significantly larger 50% at a = 0.05, so there is sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is equal to 50%.
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