A hospital claims that the mean wait time for emergency room patients is more than 38 minutes. Identify the null hypothesis Ho, and the alternate hypothesis Ha in terms of the parameter
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A hospital claims that the mean wait time for emergency room patients is more than 38 minutes. Identify the null hypothesis Ho, and the alternate hypothesis Ha in terms of the parameter
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- A commonly cited study says that 49% of students study less than 5 hours per week. A researcher does not think this is accurate and wants to show that the percentage of students that study less than 5 hours per week is not equal to 49%. Identify the null hypothesis, H0, and the alternative hypothesis, Ha, in terms of the parameter p.A researcher states an alternative hypothesis that the exercise improves physical health. Which is a possible null hypothesis corresponding to this alternative hypothesis? Exercise worsens physical health Physical health is not impacted by exercises Exercises worsens or has no impact on physical healthFormulate the appropriate null and alternative hypothesis.
- A recent study indicated men who consume alcohol on a daily basis are at a higher risk of experiencing liver disease. Develop a null hypothesis. Does the scenario indicate a Directional (1-tailed) or Non-Directional (2-tailed) hypothesis? Based on the scenario, develop an alternative hypothesis.Which is the correct null hypothesis based on this statement: People with diabetes have higher systolic blood pressure than people without diabetes? People with diabetes have lower systolic blood pressure than people without diabetes. People with diabetes have equal systolic blood pressure when compared to people without diabetes. People with diabetes have a systolic blood pressure equal to or lower than people without diabetes. None of these are a null hypothesis.The null hypothesis states that there is no difference between a parameter and a specific value, or that there is no difference between two parameters.
- A cereal company claims that the mean weight of the cereal in its packets is not 12 oz. Identify the null hypothesis Ho.Suppose U.S. consumers 21 years and older consumed 26.3 gallons of beer and cider per person during 2017. A distributor in Milwaukee believes that beer and cider consumption are higher in that city. A sample of consumers 21 years and older in Milwaukee will be taken, and the sample mean 2017 beer and cider consumption will be used to test the following null and alternative hypotheses: Ho: Hs 26.3 Ha: u > 26.3 (a) Assume the sample data led to rejection of the null hypothesis. What would be your conclusion about consumption of beer and cider in Milwaukee? Conclude that the population mean annual consumption of beer and cider in Milwaukee is less than or equal to 26.3 gallons and hence lower than throughout the United States. Conclude that the population mean annual consumption of beer and cider in Milwaukee is greater than 26.3 gallons and hence lower than throughout the United States. Conclude that the population mean annual consumption of beer and cider in Milwaukee is less than or…A hospital spokesperson states that 3% of emergency room visits by college students are for alcohol related health problem. Thus, Ho:p equals 0.03 and Ha:p does not equal 0.03 Descripe the Type 1 and Type 2 error that could occur for this hypothesis using words that are specific to this particular situation.
- A researcher hypothesizes that Drug A is more effective than Drug B. In conducting an analysis to test this hypothesis, how should the null hypothesis be stated?A researcher risks making a Type I error any time the null hypothesis is rejected? state the reason?A college professor states that this year's entering students appear to be smarter than entering students from previous years. The college’s records indicate that the mean IQ for entering students from earlier years is 110. Suppose that we want to sample a small number of this year's entering students and carry out a hypothesis test to see if the professor’s statement can be supported. State the null hypothesis H0 and the alternative hypothesis H1 that we would use for this test.