null hypothesis p = U is shown below, an LinRegTTest y= a+bx B # 0 and p +0 t=-2.8982844267 p=0.0090879947 df=20 a=57.35324963 b= -1.049298322 s=6.312461676
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- Students who arrive to class early do just as well on the homework as those who arrive to class late. Alternative hypothesis Null hypothesisWhich 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.In a hypothesis test, the null hypothesis states that the population proportion of individuals who support a certain political candidate is equal to 0.6. A sample of size 400 is taken and 175 individuals support the candidate. What is the Z-score for this hypothesis test?
- A researcher wants to find the effect of a special diet on systolic blood pressure. A sample of 7 adults was selected to start them on this diet for 3 months. Based on this information, can it be stated that systolic blood pressure changes with the special diet? What type of hypothesis test will allow us to reach a conclusion in the situation posed above? A. Null B. Bilateral C. Unilateral right rejection zone D. Unilateral left rejection zoneWhen one is testing H0: µ= µ0 on the basis of data from a sample of size n from a normally distributed population with a known variance of σ2 , the test statistic is ____________________________________________. When one is testing H0: µ= µ0 on the basis of data from a sample of size n from a normally distributed population with a unknown variance, the test statistic is ___________________. The null hypothesis contains a statement of ______________________. The statement μ≥0 0 is an inappropriate statement for the ___________ hypothesis. The rejection region consists of those values of the ___________ that will cause rejection of the null hypothesis. The null hypothesis and the alternative hypothesis are ___________ of each other. Given H0: µ= µ0, then Ha: ___________. Given H0: µ ≤ µ0, then Ha: ___________. Given H0: µ ≥ µ0, then Ha: ___________. A statement of what you wish to conclude goes in the ___________. A market analyst believes that more than 30% of the adults in a…The record of a casualty insurance company show that , in the past, its clients have had a mean of 1.7 auto accidents per day with a variance of 0.0025. The actuaries of the company claim that the variance of the number of accidents per day is no longer equal to 0.0025. Suppose that we want to carry out a hypothesis test to see if there is support for the actuaries' claim. Stat the null hypothesis H0 and the alternative hypothesis H1 that we would use this test. H0: ____ H1: _____
- A local chess club claims that the length of time to play a game has a mean of 43 minutes or more. Write sentences describing type I and type II errors for a hypothesis test of this claim. A type I error will occur if the actual mean of the length of time to play a game is ▼ equal to less than or equal to not equal to greater than or equal to greater than less than 43 minutes, but you ▼ reject fail to reject the null hypothesis, ▼ Upper H 0 : mu greater than or equals 43H0: μ≥43 Upper H 0 : mu not equals 43H0: μ≠43 Upper H 0 : mu equals 43H0: μ=43 Upper H 0 : mu less than or equals 43H0: μ≤43 Upper H 0 : mu greater than 43H0: μ>43 Upper H 0 : mu less than 43H0: μ<43 . A type II error will occur if the actual mean of the length of time to play a game is ▼ greater than less than or equal to less than greater than or equal to equal to not equal to 43 minutes, but you ▼ fail to reject reject the null hypothesis, ▼ Upper H 0…When is a researcher at risk of making a Type II error? Group of answer choices: whenever H0 is rejected whenever H1 is rejected whenever H0 fails to be rejected The risk of a Type II error is independent of the decision from a hypothesis test.The bottled beverage industry will use robots to fill drinks in bottles containing 1000 ml. There are 2 robot companies (A and B) that offer the industry. Beverage industry managers want the number of drinks that are filled into bottles not to be spilled. Robots are selected that produce the least spillage. To select the robot to be used, experiments were carried out on both robots and observed the amount of drink that spilled from each bottle. If µ1 = the average spill from robot A, µ2 = the average from robot B, then the hypothesis that can be tested from the data:) Ho: µ1- µ2 < 0 dan Ha: µ1- µ2 >= 0 (other) Ho: µ1- µ2 <= 0 dan Ha: µ1- µ2 > 0 Ho: µ1- µ2 = 0 dan Ha: µ1- µ2 not equal to 0
- The bottled beverage industry will use robots to fill drinks in bottles containing 1000 ml. There are 2 robot companies (A and B) that offer the industry. Beverage industry managers want the number of drinks that are filled into bottles not to be spilled. Robots are selected that produce the least spillage. To select the robot to be used, experiments were carried out on both robots and observed the amount of drink that spilled from each bottle. If µ1 = the average spill from robot A, µ2 = the average from robot B, then the hypothesis that can be tested from the data:) Ho: µ1- µ2 < 0 dan Ha: µ1- µ2 >= 0 Lainnya (other) Ho: µ1- µ2 <= 0 dan Ha: µ1- µ2 > 0 Ho: µ1- µ2 = 0 dan Ha: µ1- µ2 not equal to 0Type 1 error is committed whenever we accept null hypothesis well in fact it is false. True or False?The null and alternative hypotheses for a hypothesis test of the difference in two population means are: Null Hypothesis: μ1 = μ2 Alternative Hypothesis: μ1 < μ2 Notice that the alternative hypothesis is a one-tailed test. Suppose ttest_ind method from scipy module is used to perform the test and the output is (3.25, 0.0043). What is the P-value for this hypothesis test? Select one. -3.25 0.00215 0.0043 3.25