fou may need to use the appropriate appendix table or technology to answer this question. In 2012, seventy percent of Canadian households had an internet connection. A sample of 370 households taken in 2013 showed that 76% 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 cons (a) State the nul and alternative hypotheses to be tested. (Enter le for as needed. Let p be the proportion of all Canadian households with internet connections.) Ho H (b) Compute the test statistic. (Round your answer to two decimal places.) (c) The null hypothesis is to be tested at the 5% level of significance. Determine the critical value(s) for this test. (Round your answer(s) to two decimal places. If the test is one-tailed, enter NONE for the unused tail test statistic s test statistic (4) What do you conclude? O Do not reject H We can conclude that there has been a significant increase in the percentage of the Canadian households that have internet connections O Reject H We can conclude that there has been a significant increase in the percentage of the Canadian households that have internet connections O Do not reject H We cannot condude that there has been a significant increase in the percentage of the Canadian households that have internet connections. percentage of the Canadian households that have internet connections O Reject H We cannot conclude that there has been a significant increase in t

Over the past few decades, public health officials have examined the link between weight concerns and teen girls' smoking. Researchers surveyed a group of 273 randomly selected teen girls living in Massachusetts (between 12 and 15 years old). After four years the girls were surveyed again. Sixty-three said they smoked to stay thin. Is there good evidence that more than thirty percent of the teen girls smoke to stay thin? The alternative hypothesis is: p 0.30 p s0.30

Internet tax: The Gallup Poll asked 1043 U.S. adults whether they believed that people should pay sales tax on items purchased over the internet. Of these, 407 said they supported such a tax. Does the survey provide convincing evidence that the percentage of U.S. adults who favor an internet sales tax differs from 40%? Use the a = 0.05 level of significance. Part 1 of 5 State the appropriate null and alternate hypotheses. Ho: p = 0.40 H:p = 0.40 This hypothesis test is a two-tailed test. Part: 1/5 Part 2 of 5 Find the critical values. Round the answers to at least three decimal places. For a = 0.05, the critical values are and

A news article that you read stated that 59% of voters prefer the Democratic candidate. You think that the actual percent is different. 120 of the 236 voters that you surveyed said that they prefer the Democratic candidate. What can be concluded at the 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ?Select an answerv (please enter a decimal) H.:?Select an answerv (Please enter a decimal) c. The test statistic ?V = (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ?va f. Based on this, we should Select an answerv the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest the population proportion is not significantly different 59% at a = 0.05, so there is not sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is different 59%. O The data suggest the…

1. A marketing manager for a cell phone company claims that more than 35% of children aged 10 – 11 have cell phones. In a survey of 5000 randomly selected children ages 10 – 11, 1805 of them had cell phones. Based on the sample data, can you conclude that the manager's claim is true? Use a 1% level of significance. a. Define the population proportion to be tested and write the null and alternative hypotheses. b. Check the conditions required for the test.

A news article that you read stated that 54% of voters prefer the Democratic candidate. You think that the actual percent is smaller. 102 of the 221 voters that you surveyed said that they prefer the Democratic candidate. What can be concluded at the 0.10 level of significance?For this study, we should use The null and alternative hypotheses would be: Ho: (please enter a decimal) H1: (Please enter a decimal)The test statistic = (please show your answer to 3 decimal places.)The p-value = (Please show your answer to 4 decimal places.)The p-value is ααBased on this, we should the null hypothesis.Thus, the final conclusion is that ... The data suggest the population proportion is not significantly smaller 54% at αα= 0.10, so there is not sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is smaller 54%.The data suggest the populaton proportion is significantly smaller 54% at αα= 0.10, so there is sufficient evidence to conclude that the…

A publisher reports that 44% of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually different from the reported percentage. A random sample of 260 found that 40% of the readers owned a particular make of car. State the null and alternative hypotheses.

The article "Freedom of What?" (Associated Press, February 1, 2005) described a study in which high school students and high school teachers were asked whether they agreed with the following statement: "Students should be allowed to report controversial issues in their student newspapers without the approval of school authorities." Researchers hypothesized that the long-run proportion of high school teachers who would agree with the statement would differ from the long-run proportion of high school students who would agree. Two random samples - 8,000 high school teachers and 10,000 high school students were selected from high schools in the U.S. It was reported that 39% of the teachers surveyed and 58% of the students surveyed agreed with the statement. A simulated null distribution of 1,000 differences in proportions created by using the Two Proportion applet is shown below. Total shuffles - 1000 251 Number of shuffles 20 Mean -0.000 SD-0.007 LUL 0.024 -0.026 -0,016 -0.006 0.004 0.014…

A publisher reports that 52 % of their readers own a laptop. A marketing executive wants to test the claim that the percentage is actually different from the reported percentage. A random sample of 350 found that 46 % of the readers owned a laptop. State the null and alternative hypotheses.

According to the 2010 Census, 16% of people in the United States are of Hispanic or Latino origin.  One Vigo County supervisor believes her county has a lower proportion of Hispanic people than the nation as a whole and questions the validity of the Census.  She looks at the county's most recent survey data, a random sample of 400 county residents, and found that 44 of those surveyed are of Hispanic or Latino origin. a. Identify an appropriate null and alternative hypothesis for a test to be conducted by the county supervisor. b. Would the hypothesis test be one or two tailed?  Z or T test? Upper or lower? Explain your response.