Find the P-value for a left-tailed hypothesis test with a test statistic if z=-1.26. Decide whether to reject Ho if the level of significance is a =0.05.

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Q: Consider the following hypothesis test: H0: μ =16 Ha: μ ≠ 16 A sample of 50 provided a sample mean…

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Q: Under what circumstances is the t statistic used instead of the Z score for a hypothesis test?

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Q: Test the hypotheses at significance level a = 0.10

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Q: what is measured by Cohen's d for a hypothesis test with a t statistic?

A: One of the most common ways to measure effect size is Cohen's D. The scale of an effect is how high…

Q: g. With which p level-0.05 or 0.01 reject the null hypothesis? Explain.

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Q: Find the P-value for a left-tailed hypothesis test with a test statistic of z = - 1.38. Decide…

A: The type of test is left tailed test. The value of test statistic is, z = -1.38 The level of…

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Q: With a p value of .04 and an ⍺ of .05, should you reject or fail to reject the null hypothesis?"

A: Given that: p-value= 0.04 ⍺=0.05

Q: It is expected that a treatment will reduce scores on a variable. If a = .05, what is the critical t…

A: Given,sample size(n)=15a=0.05it is a left tailed test because it is given that a treatment will…

Q: The test statistic of z = 1.20 is obtained when testing the claim that p> 0.3. a. Identify the…

A: If the alternative hypothesis contains : 1)  greater than (> ) symbol then the test is right…

Q: Find the​ P-value for a​ left-tailed hypothesis test with a test statistic of z=−1.42. Decide…

A: P( z < -1.42 ) = NORMSDIST( -1.42) ------ Excel function                      = 0.0778…

Q: ) In testing hypotheses, which of the following would be strong evidence against the null…

A: If the P-value is smaller then we reject the null hypothesis.

Q: A researcher administers a treatment to a sample from a population with a mean of m=50. If the…

A: Claim : the treatment is expected to increase scores.

Q: The test statistic of z 1.98 is obtained when testing the claim that p 0.607. a Identify the…

A:

Q: Find the P-value for a left-tailed hypothesis test with a test statistic of z= - 1.79. Decide…

A: The test statistic is given by Z = -1.79 Level of significance = 0.10

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Q: The level of significance for a hypothesis is 0.01. If you compute a p-value of 0.0157 what decision…

A: Level of significance = 0.01 p-value = 0.0157

Q: The test statistic of z= 1.19 is obtained when testing the claim that p> 0.3. a. Identify the…

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Q: Find the​ P-value for a​ left-tailed hypothesis test with a test statistic of z=−1.96. Decide…

A: Given information Left tailed hypothesis test Z = -1.96 Significance level α = 0.05

Q: The test statistic of z = 2.05 is obtained when testing the claim that p > 0.4. Identify the…

A: The test statistic is z=2.05 The claim is p > 0.4 α=0.10

Q: Previously, an organization reported that teenagers spend 4.5 hours per week, on average, on the…

A: Solution-: Given: n=15,μ=4.5,x¯=4.75,s=2.0 (a) We identify hypothesis (b) Conduct the hypothesis…

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Q: The test statistic of z = 0.54 is obtained when testing the claim that p > 0.5. Identify the…

A: Given that  Claim : p>0.50 Level of significance (α)=0.05 Test statistic (z) = 0.54

Q: The test statistic of z=1.79 is obtained when testing the claim that p≠0.576. a. Identify the…

A: From the provided information, The test statistic (z) = 1.79 Claim p ≠ 0.576

Q: The test statistic of z equals=0.99 is obtained when testing the claim that p greater than >0.2…

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Q: Which of the following relates to the acceptance of the null hypothesis when it is actually false?…

A: Type I error - It is the error caused by rejecting a null hypothesis, when it is actually true. Type…

Q: The test statistic of z = 0.53 is obtained when testing the claim that p > 0.5. Identify…

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Q: The p-value was reported to be small, so we would reject the null hypothesis at a 5% level and…

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Q: AFind the critical z value using a significance level of a 0.07 if the alternative hypothesis Ho is…

A: Answer - Find the critical z value using a significance level of α = 0.07       The alternative…

Q: In testing hypotheses, which of the following would be strong evidence against the null hypothesis?…

A: Basics:

Q: Find the value of the standard score, z, and determine whether to reject the null hypothesis at a…

A: Given that  Null hypothesis H0 : μ=19.1 meters Alternative hypothesis H1 : μ≠19.1 meters Sample size…

Q: Consider the following hypothesis test:   H0:μ = 15   Ha:μ ≠ 15   A sample of 50 provided a sample…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: a) Write the null hypothesis and the alternative hypothesis. b) Based on the sample mean, the salmon…

A: The provided sample mean is Xˉ=0.07\bar X = 0.07 and the sample standard deviation is s=0.02s =…

Q: If alpha is .10 in a two-tail hypothesis test, what is your decision rule for rejecting a null that…

A: The z-test statistic for the population mean is Z=x¯-μ0σnwhere x¯=sample mean…

Q: the p-value for this hypothesis test would be ________.

A: Given : n1=35 , n2=39 , X1-bar=64.5 , X2-bar=63.6 ,  σ1=3.0 , σ2=3.5 Our aim is to find the p-value.…

Q: The test statistic of z 1.26 is obtained when testing the claim that p>0.2. a. Identify the…

A: a. The test statistic of z=1.26 and the claim of the test is p>0.2. The claim shows the symbol…

Q: When asked what it means for the result of a hypothesis test to be practically significant (or…

A: Given that  When asked what it means for the result of a hypothesis test to be practically…