1. A researcher is testing the claim that adults consume an average of at least 1.85 cups of coffee per day. A sample of 35 adults shows a sample mean of 1.70 cups per day with a sample standard...


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1. A researcher is testing the claim that adults consume an average of at least 1.85 cups of coffee per day. A<br>sample of 35 adults shows a sample mean of 1.70 cups per day with a sample standard deviation of 0.4 cups<br>per day. Test the claim at a 5% level of significance. What is your conclusion?<br>2. A government Bureau claims that more than 50% of US, tax returns were filed electronically last year. A<br>random sample of 150 tax returns for last year contained 86 that were filed electronically. Test the Bureau's<br>claim at a 5% level of significance. What is your conclusion? Report the p-value for this test.<br>3. A major automobile company claims that its New electric powered car has an average range of more that 10o<br>miles. A random sample of 50 new electric cars was selected to test the claim. Assume that the population<br>test.<br>standard deviation is 12 miles. A 5% level of significance will be used for the<br>A) What would be the consequences of making a Type ll error in this problem<br>Compute the Probability of making a Type ll error if the true population mean is 105 miles.<br>C) What is the maximum probability of making a Type I error in this problem?<br>Please Note: A hypothesis test answer must contain: a Null and an Alternate Hypothesis, a computed value of<br>the test statístic, a critical value of the test statistic, a Decision, and a Conclusion.<br>

Extracted text: 1. A researcher is testing the claim that adults consume an average of at least 1.85 cups of coffee per day. A sample of 35 adults shows a sample mean of 1.70 cups per day with a sample standard deviation of 0.4 cups per day. Test the claim at a 5% level of significance. What is your conclusion? 2. A government Bureau claims that more than 50% of US, tax returns were filed electronically last year. A random sample of 150 tax returns for last year contained 86 that were filed electronically. Test the Bureau's claim at a 5% level of significance. What is your conclusion? Report the p-value for this test. 3. A major automobile company claims that its New electric powered car has an average range of more that 10o miles. A random sample of 50 new electric cars was selected to test the claim. Assume that the population test. standard deviation is 12 miles. A 5% level of significance will be used for the A) What would be the consequences of making a Type ll error in this problem Compute the Probability of making a Type ll error if the true population mean is 105 miles. C) What is the maximum probability of making a Type I error in this problem? Please Note: A hypothesis test answer must contain: a Null and an Alternate Hypothesis, a computed value of the test statístic, a critical value of the test statistic, a Decision, and a Conclusion.

Jun 01, 2022
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