An experiment was designed to compare the lengths of time that four different drugs provided pain relief after surgery. The results (in hours) follow. Is there enough evidence to reject the null hypothesis that there is no significant difference in the length of pain relief provided by the four drugs at a = .05? Drug
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Q: Strack, Martin, and Stepper (1988) reported that people rate cartoons as funnier when holding a pen…
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A: Hypotheses can be constructed as: H0: µd=0 H1: µd>0 Data is: SS=150 n=25 df=n-1=25-1=24 MD=1.6…
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A: Given information: n = 30 x = 21 p^=xn=2130=0.70
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Q: Strack, Martin, and Stepper (1988) reported that people rate cartoons as funnier when holding a pen…
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Q: Strack, Martin, and Stepper (1988) reported that people rate cartoons as funnier when holding a pen…
A: Strack, Martin, and Stepper (1988) reported that people rate cartoons as funnier when holding a pen…
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A: Given: Sample Size = n = 25 Formulating Hypothesis : Null : H0 : μD = 0 ( No significant difference…
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A: From the provided information, The test statistic t = -2.32 And p < 0.05
Q: Strack, Martin, and Stepper (1988) reported that people rate cartoons as funnier when holding a pen…
A: State the hypotheses. That is, there is no difference between the two conditions. That is, there…
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A: Givensample size(n)=100Mean(x)=1.05sample standard deviation(sd)=0.5α=0.01
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Q: Strack, Martin, and Stepper (1988) reported that people rate cartoons as funnier when holding a pen…
A: The objective is to test whether the cartoons are rated significantly funnier when the participants…
Q: Strack, Martin, and Stepper (1988) reported that people rate cartoons as funnier when holding a pen…
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Q: Strack, Martin, and Stepper (1988) reported that people rate cartoons as funnier when holding a pen…
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Q: Strack, Martin, and Stepper (1988) reported that people rate cartoons as funnier when holding a pen…
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Q: Strack, Martin, and Stepper (1988) reported that people rate cartoons as funnier when holding a pen…
A: The objective is to test whether the cartoons are rated significantly funnier when the participants…
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A: H0: p1 = p2H1: p1 ≠ p2
Q: Strack, Martin, and Stepper (1988) reported that people rate cartoons as funnier when holding a pen…
A: State the hypotheses. That is, there is no evidence to conclude that on average, the cartoons were…
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- While trying to convince her friends that more than half of all sophomores live off-campus, Bren took a survey of a random sample of 129 sophomores and collected that among them 66 lived off-campus. Does this evidence support Bren's claim that more than half of all sophomores live off-campus at the 0.1 level of significance? p-value (round to four decimal places, use the cumulative table to find) = Conclusion (write R for "reject H0", and F for "fail to reject H0"):Suppose researchers draw a sample of 300 breakfast sandwiches from a certain fast-food restaurant, and carry out a t test of the null hypothesis that the true mean sodium content is 1000, against the alternative hypothesis that it is greater than 1000. They find a negative value of the test statistic, and a p-value of 0.85. What would the p-value have been had they used a two-sided alternative hypothesis? (Give your response to at least 3 decimal places. Give only your numeric response, and not any extra characters or symbols.)In a previous Paul, 44% of adults and children under the age of 18 reported that their family eat dinner together seven nights a week... use technology to find the P value. P value =_. (round to three decimal places as needed.) should one reject the null hypothesis? or should one not reject the null hypothesis?
- We ask a random sample of 1000 New Zealanders their opinion on whether New Zealand should become a republic with a president replacing the Queen as head of state and 350 answer ‘yes’. We are testing the following pair of hypotheses for the value of p, the true proportion of New Zealanders who think that New Zealand should become a republic with a president replacing the Queen as head of state: H0: p = 0.40 Ha: p > 0.40 Select the correct value (to 3 decimal places) of the z-test statistic for this sample from the list below. Select one: a.3.315 b.-3.227 c.-3.315 d.3.227.A sample of 9 measurements, randomly selected from a normally distributed population, resulted in x= 2.6, and s= 0.9 Conduct a hypothesis test to verify the claim that the population mean is greater than 2.5 . Use a=.05A researcher estimates that the average height of the buildings of 30 or more stories in a large city is at most 700 feet. A random sample of 10 buildings is selected, and the heights in feet are shown. At α = 0.025, is there enough evidence to reject the claim? 485 511 841 725 615 520 535 635 616 582 What is the critical value of the t?
- The data in the accompanying table are from a paper. Suppose that each person in a random sample of 49 male students and in a random sample of 88 female students at a particular college was classified according to gender and whether they usually or rarely eat three meals a day. Find the test statistic and P-value. (Use SALT. Round your test statistic to three decimal places and your P-value to four decimal places.) Usually Eat3 Meals a Day Rarely Eat3 Meals a Day Male 26 23 Female 35 53A researcher is testing the effect of a new anxiety medication on reaction time. A sample of n=16 students is obtained and each student is given the normal does of the medicine and then 30 minutes later, their reaction time is measured. The reaction times for the sample was M=220 milliseconds with SS=6000. For students in the regular population μμ=200. a.) Are these data sufficient to conclude that the medication has a significant effect on reaction time? Use a two-tailed test with αα=.05. b.)Compute r2, the percentage of variance explained by the treatment effect.The proportion p of residents in a community who recycle has traditionally been 60% . A policy maker claims that the proportion is less than 60% now that one of the recycling centers has been relocated. If 128 out of a random sample of 240 residents in the community said they recycle, is there enough evidence to support the policy maker's claim at the 0.01 level of significance? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) (a) State the null hypothesis H0 and the alternative hypothesis H1 . H0: H1: (b) Determine the type of test statistic to use. ▼(Choose one) (c) Find the value of the test statistic. (Round to three or more decimal places.) (d) Find the critical value. (Round to three or more decimal places.) (e) Is there enough evidence to support the policy maker's claim that the…
- An experiment was conducted to see the effectiveness of two antidotes to three different doses of a toxin. The antidote was given to a different sample of participants five minutes after the toxin. Thirty minutes later the response was measured as the concentration in the blood. What can the researchers conclude with α = 0.05? Dose Antidote 5 10 15 1 0.61.11.1 7.21.52.4 3.14.15.9 2 1.11.21.1 1.71.31.5 2.13.12.1 A) Obtain/compute the appropriate values to make a decision about H0.Antidote: critical value = test statistic = Decision: Dose: critical value = test statistic = Decision: Interaction: critical value = test statistic = Decision: B) Compute the corresponding effect size(s) and indicate magnitude(s).Antidote: η2 = Dose: η2 = Interaction: η2 =The proportion p of residents in a community who recycle has traditionally been 60% . A policy maker claims that the proportion is less than 60% now that one of the recycling centers has been relocated. If 101 out of a random sample of 200 residents in the community said they recycle, is there enough evidence to support the policy maker's claim at the 0.10 level of significance?Perform a one-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) (a) State the null hypothesis H0 and the alternative hypothesis H1 . H0: H1: (b) Determine the type of test statistic to use. ▼(Choose one) (c) Find the value of the test statistic. (Round to three or more decimal places.) (d) Find the p-value. (Round to three or more decimal places.) (e) Is there enough evidence to support the policy maker's…For the population, 57% of people are searched if stopped. For a sample of 26441 stops, what Z-critical value is required for significance at the 5 % level? In a test to determine if Black men are searched more frequently than the rest of the population? (answer to 2 d.p.s)