A newsletter publisher believes that over 71% of their readers own a Rolls Royce. For marketing purposes, a potential advertiser wants to confirm this claim. After performing a test at the 0.02 level of significance, the advertiser decides to reject the null hypothesis.   What is the conclusion regarding the publisher's claim? There is sufficient evidence at the 0.02 level of significance that the percentage is over 71 %.   There is not sufficient evidence at the 0.02 level of significance to say that the percentage is over 71 %

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In general terms, what is a hypothesis test? Are hypothesis tests based on descriptive statistics or inferential statistics? Is a t test an inferential statistic? a. Enter your response here.

Explain the difference between statistical significance and practical significance. Choose the correct answer below. O A. Statistical significance means that the sample statistic is not likely to come from the population whose parameter is stated in the null hypothesis. Practical significance refers to whether the difference between the sample statistic and the parameter stated in the null hypothesis is large enough to be considered important in an application. O B. Statistical significance refers to how an unusual event is unlikely to actually appear in a real world application, such as every entry in a sample of size 50 having the same value. Practical significance refers to how an unusual event is likely to actually appear in a real world application, such as a rejection of a null hypothesis using data that looks feasible. O C. Statistical significance refers to the type of hypothesis test needed to analyze a population, with some tests being more important than Z tests. Practical…

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A political scientist claims that 38% of first-year college students characterize themselves as being “moderate” or “middle of the road” as far as their political affiliation is concerned.   Believing this claimed value is too high, you survey a random sample of 400 first-year college students and find that 120 characterize themselves as being “moderate” or “middle of the road.”    Based on this information, what will the test statistic be? Choose the answer below that is closest to what you calculate, and try not to do a lot of rounding until you get to the very end of your calculations.   1. -0.3 2. -1.2 3. -2.6 4. -3.3 5. None of the other answer options are correct because the test statistic should be positive, not negative.

A newspaper publisher believes that over 47% of their readers own a Rolls Royce. For marketing purposes, a potential adveriser wants to confirm this claim. After performing a test at the 0.02 level of significance, the advertiser failed to reject the null hypothesis.  What is the conclusion regarding the publisher's claim? (Choose A or B) A. There is sufficient evidence at the 0.02 level of significance that the percentage is over 47%. B. There is not sufficient evidence at the 0.02 level of significance to say that the percentage is over 47%.

According to a poll, 79% of California adults (398 out of 506 surveyed) feel that education is one of the top issues facing California. We wish to construct a 90% confidence interval for the true proportion of California adults who feel that education is one of the top issues facing California. Find a 90% confidence interval for the population proportion. (Round your answers to three decimal places.) Additional Materials Reading

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Hi, may you please help me with the following:    The purpose of this assignment is to apply hypothesis tests to the case of Bayview University. Use the dataset below and read the case thats attached, use descriptive statistics to summarize the data and comment on your findings. Answer the following 3 questions.  Develop 95% confidence interval for the proportion of all students, the proportion of male students, and the proportion of female students who were involved in some type of cheating. Conduct a hypothesis test to determine whether the proportion of business students at Bayview University who were involved in some type of cheating is less than that of business students at other institutions by the Chronicle of higher education. Conduct a hypothesis test to determine whether the proportion of business students at Bayview University who were involved in some form of cheating is less than that of nonbusiness students at other institutions are reported by the Chronicles of Higher…