Which statistical inference technique should be used to answer the following statistical question? Researchers want to know adults' preferences regarding Coke over Pepsi. A survey asked a random sample of 500 adults whether they preferred Coke over Pepsi. A confidence interval for the difference between population population proportions A hypothesis test for the population mean. A hypothesis test for the population proportion. O A confidence interval for the population mean. A confidence interval for the population proportion.

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Question Help A magazine provided results from a poll of 1000 adults who were asked to identify their favorite pie. Among the 1000 respondents, 14% chose chocolate pie, and the margin of error was given as ±4 percentage points. Given specific sample data, which confidence interval is wider: the 95% confidence interval or the 80% confidence interval? Why is it wider? Choose the correct answer below. O A. A 95% confidence interval must be wider than an 80% confidence interval because it contains 95% of the true population parameters, while the 80% confidence interval only contains 80% of the true population parameters. B. A 95% confidence interval must be wider than an 80% confidence interval in order to be more confident that it captures the true value of the population proportion. O C. An 80% confidence interval must be wider than a 95% confidence interval because it contains 100% - 80% = 20% of the true population parameters, while the 95% confidence interval only contains 100% - 95%…

A basketball player wants to know if they make more than 75% of the penalty shots that they take. What is the appropriate test statistic for this scenario? one sample t-test two independent samples t-test two related samples t-test ANOVA

SLICE NAME Confidence Intervals and Hypothesis Testing TOPIC NAME Hypothesis test for the difference of population means: Z test

Multiple Choice Question A study took a random sample of adults and asked them about their bedtime habits. The data showed that people who drank a cup of tea before bedtime were more likely to go to sleep earlier than those who didn't drink tea. What was the independent (explanatory variable) in this study? A. Whether or not the person drank tea B. When the person went to sleep C. The adults D. Bedtime habits

Question content area top Part 1 A poll was conducted to investigate opinions about global warming. The respondents who answered yes when asked if there is solid evidence that the earth is getting warmer were then asked to select a cause of global warming. The results are given in the accompanying data table. Use a 0.01 significance level to test the claim that the sex of the respondent is independent of the choice for the cause of global warming. Do men and women appear to​ agree, or is there a substantial​ difference?             Human activity Natural patterns ​Don't know   Male 301 159 61   Female 298 138 63   Compute the test statistic. enter your response here ​(Round to three decimal places as​ needed.)   Find the critical​ value(s). enter your response here ​(Round to three decimal places as needed. Use a comma to separate answers as​ needed.)

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