In 2012, seventy percent of Canadian households had an internet ...

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In 2012, seventy percent of Canadian households had an internet connection. A sample of 484 households taken in 2013 showed that 75 of them had an internet connection. We are interested in determining whether or not there has been a significant increase in the percentage of the Canadian households that have internet connections.
 a. State the null and alternative hypotheses to be tested.
  b. Compute the test statistic.
  c. The null hypothesis is to be tested at the 5 level of significance. Determine the critical value(s) for this test.
  d. What do you conclude?

Question 2

Cluster sampling tends to provide better results when the elements within the clusters are
 a. homogeneous.
 b. heterogeneous.
 c. mutually inclusive.
  d. correlated.

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Answer to Question 1

a. H0: p  .70
Ha: p > .70
b. Test statistic z = 2.4 (rounded)
c. z.05 = 1.645
d. Reject H0 and conclude that there has been a significant increase.

Answer to Question 2

b

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Thank you

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Happy to help you