A researcher conducts a hypothesis test to evaluate the effect of a treatment that is expected to increase scores. The hypothesis test produces a z-score of z = 2.37. If the researcher is using a one-tailed test, what is the correct statistical decision? Group of answer choices   A)Reject the null hypothesis with α = .05 but not with α = .01. B)Reject the null hypothesis with either α = .05 or α = .01. C)Fail to reject the null hypothesis with either α = .05 or α = .01. D)This cannot be answered without additional information.

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A: Given that,  x=372,n=737 The sample proportion is,

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Q: The significance level of a hypothesis test is, α = 0.01. The P-value of this hypothesis test is…

A: Solution-: We determine the conclusion of the hypothesis test.

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A: A randomized double-blind clinical trial is done.

Q: A researcher administers a treatment to a sample of n = 25 participants and uses a hypothesis test…

A: In the given situation, The test statistic is z=2.37 Tail of the test is two tailed. Let the level…

Q: An independent-samples research study uses two samples, each with n = 12 participants. If the data…

A: Given information- Sample size n = 12 The value of the t-test statistics t = 2.50 We have given a…

Q: If a hypothesis test produces a z-score in the critical region, which decision should be made?…

A: The critical region is also called as rejection region which is the set of test statistic values for…

Q: significance level of α=0.02α=0.02.       H0:p=0.59H0:p=0.59       H1:p<0.59H1:p<

A: The test is left tailed test.     The sample proportion is:

Q: A research report describing the results from a repeated-measures t test states, “t(22) = 3.2, p <…

A: Assume that the level of significance is L=0.05. And it is given that "p&lt;0.05", which means that…

Q: A sample of n = 25 scores produces a t statistic of t = −2.05. If the researcher is using a…

A: solutionGiven datan=25Test statistics t=-2.05Two tailed testsignificance level α=0.05To find: what…

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A: Given,   P-value = 0.0400 Level of significance = 0.10 Test: two-tailed test.   The objective is to…

Q: A researcher is conducting an experiment to evaluate a treatment that is expected to increase the…

A: μ=100,x¯=105

Q: A researcher did a one-tailed one-sample t-test to test the hypothesis that babies prefer the color…

A:

Q: A local school board wants to determine if the proportion of households in the district that would…

A: It is given that P-value for testing H0 : p = 0.65 vs Ha : p ≠ 0.65 is = 0.29

Q: Only 20% of registered voters voted in the last election. Will voter participation decline for the…

A: The provided information are:

Q: A researcher conducts a hypothesis test to evaluate the effect of a treatment that is expected to…

A: Given information Claim: - Effect of treatment is expected to increase scores One-tailed test

Q: An independent-measures research study uses two samples, each with n = 12 participants.If the data…

A: From the provided information, Sample size (n) = 12 The value of test statistic = 2.08

Q: Professor Stone complains that student teacher ratings depend on the grade the student receives. In…

A: Given: Observed frequency table: Rating A B C F (or withdrawal) Row Total Excellent 14 18 16 2…

Q: Explain why a level of significance of a = 0 is not used. Why is a level of significance of a = 0…

A: It is given that the level of significance α = 0.

Q: You are conducting a study to see if the probability of catching the flu this year is significantly…

A: From the provided information, level of significance (α) = 0.005 Sample size (n) = 121 Number of…

Q: A researcher claims that less than 80% of US adults think that healthy children should be required…

A:

Q: Test the claim that the mean GPA of night students is smaller than 3.1 at the 0.05 significance…

A: We have to test claim.

Q: An independent measures research study uses two samples, each with 9 participants. If the data…

A:

Q: a z-score of z = 2.37. If the researcher is using a one-tailed test, what is the correct statistical…

A: Given that  A researcher conducts a hypothesis test to evaluate the effect of a treatment that is…

Q: An independent-measures research study (i.e., Independent-measures t test) uses two samples, each…

A: From the given information, t-statistic =1.92 sample size (n1=n2)=12 Degrees of freedom:

Q: An education researcher claims that 58​% of college students work​ year-round. In a random sample of…

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Q: Consider a hypothesis testing situation in which the null hypothesis is p = 0.48 and the alternative…

A:

Q: Test the claim that the mean GPA of night students is larger than 3.2 at the 0.01 significance…

A: We have to find correct answer..

Q: What would our cutoff Z-score be if we want to do a two-tailed test and use an alpha of .01?

A:

Q: After treatment, the scores for the nine participants are as follows: 23, 33, 26, 28, 30, 26, 27,…

A: Let X be the random variable such that score. x¯: The sample mean of score s: The sample standard…

Q: Do pilots with higher IQs complete private pilot training in greater of fewer hours than pilots with…

A: Step 1: That is, there is no evidence to conclude that there is a significant relationship between…

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A:

Q: Data was collected on the size of towns and the high school drop out rate. A left tailed hypothesis…

A: Given information- We have given a left-tailed hypothesis test was performed for r. Significance…

Q: A random sample of n = 25 individuals is selected from a population with µ = 20, and a treatment is…

A: Consider that μ defines the population mean score.

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.