When the P - value is equal to the alpha level, the null hypothesis should be accepted.
Q: A small P-value for a test of significance is: evidence against the null hypothesis. evidence for…
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Q: Find the critical values for (a) A left-tailed test with a=0.15 (b) A two-tailed test with a= 0.03
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Q: Define and explain Type I and Type II errors and relate each to the selection of an alpha level.
A: Type I error - Type I error is rejecting the null hypothesis when it is actually true. When the…
Q: A random sample of 54 students from Cabrillo College are selected from a normal population with mu…
A: We have to find correct statement for given. Data
Q: in preparation for a simulation model, a KS test has been used to check the goodness-of-fit of a…
A: Kolmogorov-Smirnov test is used for determining the sample for checking the normality. F(x) =…
Q: For the problem below-Use .05 2-tailed alpha level. State null and alternative hypotheses. Report…
A: The data is given as : To check: mean of the individual motivation on performance is equal to the…
Q: What would your decision be on this hypothesis test if we use a level of significance for the test…
A: Here given cereal is claimed to have an average of 3 grams of dietary fiber per serving Here test…
Q: Based on a small sample, a significance test may not yield a statistically significant outcome even…
A: In a hypothesis testing of the null hypothesis, H0 against the alternative hypothesis, H1 , the two…
Q: If we have a sample of size 100 with sample mean breaking strength of 1050 pounds from a population…
A: Sample size (n)=100 Mean breaking strength (x¯) = 1050 pounds Standard deviation (σ) = 200 pounds…
Q: when we will be reject the NULL HYPOTHESIS on the basis of
A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…
Q: Why would you use a low alpha? To minimize the probability to make a Type I error To minimize the…
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Q: Using the p-value method, we reject the null hypothesis if the p-value is ___________than or equal…
A: NOTE When p-value≤α=level of significance, then we reject the null hypothesis. When…
Q: If the p-value is greater than alpha, we will. reject the null hypothesis and accept the alternative…
A: If the P-value is greater than alpha, we do not have sufficient evidence to reject the null…
Q: Assume that MLR1-6 hold. For a two-sided alternative hypothesis test, we can say that the…
A: Assume that MLR1-6 hold. Here two-sided alternative hypothesis test.
Q: If other factors are held constant, explain how increasing the number of scores in each sample…
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Q: The P-value for this hypothesis was found to be:
A: The test statistic is, z=x¯-μσn=78-682025=104=2.5 The test statistic is 2.5.
Q: In a one-way ANOVA, in theory, when the null hypothesis is true, MSWithin should be __________…
A: In ANOVA we have to test that our factor has significant effect on response or not.
Q: What are the critical t values for a one tailed hypothesis test with alpha=0.01 and a sample of n=30…
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Q: . Is there sufficient evidence at the 0.05 level of significance that the average years of…
A: To test whether there is sufficient evidence at 0.05 level of significance that the average years of…
Q: What is the critical value of a two-sided paired t test with ? = 0.05 and ? = 25?
A: Given that, Sample size n=25 Level of significance α=0.05
Q: Is this a valid experimental design?
A: Here student want to check fertilizer affect the plant growth
Q: An alpha level of 0.05 means that 99% of the means are likely to reflect the null hypothesis. True…
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Q: Under what circumstances can you use a z-test instead of a t-test to compare a sample against a…
A: t test and z-test are the statistical tests that are used to find if the value of the sample mean is…
Q: It is easier to reject the null hypothesis if the researcher uses a smaller alpha (α) level. choose…
A: We know that, Type I error is – In this we reject the null hypothesis which is actually true called…
Q: What is the critical value for a two sided t-test with an alpha = .05, and degrees of freedom = 60?
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Q: If the value of the observed test statistic falls in the rejection region, the alternative…
A: Identify the correct option for if the value of the observed test statistic falls in the rejection…
Q: The type II error is also known as false positive or false alarm. Wrongfully failing to reject the…
A: Here use type 2 error definition
Q: If we have a sample of size 100 with sample mean breaking strength of 975 pounds from a population…
A: Hypothesis to be tested: H0:μ=1000H1:μ<1000
Q: Use the given information to find the P-value. Also, use a 0.05 significance level and state the…
A: Express the hypothesis test H0:p=35H1:p≠35 Given that, z=0.78. The probability curve of the required…
Q: What is the critical t score if you are testing a two-tailed hypothesis with df = 44? (α level of…
A: Obtain the critical value at the 0.05 significance level. The critical value is obtained below as…
Q: Imagine that your null hypothesis is σ2 = 10 and your alternative hypothesis is σ2 > 10. What is…
A: It is given that the test is right-tailed. Level of significance is 0.05. Degrees of freedom is 12–1…
Q: What is the critical value for a two sided t-test with an alpha = .02, and degrees of freedom = 29?
A: Given, alpha = .02 degrees of freedom = 29 and mentioned that 2 sided t-test, Therefore from t-table…
Q: Suppose we have the following random samples: Male Female sample size 50 60 sample mean weight (kg)…
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Q: A random sample of 170 donations at a certain blood bank reveals that 84 were Type A blood. Does…
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Q: If a sample is an extreme result and is significant, it will fall in the critical region which…
A: Given statement If a sample is an extreme result and is significant, it will fall in the critical…
Q: If a Type II error is considered more serious in a certain situation, would you choose a high or low…
A: Every decision-maker can set the significance level (denoted by α)depending on which of type-1 error…
Q: At the 0.05 level of significance, does the data provide evidence to suggest that consumers in the…
A: Given,sample size (n)=25sample mean(x)=1922.76standard deviation(s)=350.8991α=0.05
Q: Choosing the alpha level for a hypothesis test allows researchers to control the probability of…
A: I am sorry for your Inconvenience. Please go through the following explanation. In hypothesis tests,…
Q: Suppose that you run a Regression Model and the Regression Coefficient for X has an associated…
A: regression coefficient for X is β here confidence level = 99% so significance level = 1%
Q: Formulate the null and alternative hypothesis and identify the type of test. Tge manufacturer if a…
A: Given: μ= average nicotine content=2.5
Q: If we have a sample of size 100 with sample mean breaking strength of 975 pounds from a population…
A: Given: n=100x¯=975s=200μ0=1000 The significance level is taken as 0.05.
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: What type of hypothesis test should be performed? Select What is the test statistic? Ex: 0.12 : Does…
A: Given information : Sample mean for manufactures A , x̅A = 142 Sample mean for manufactures B , x̅B…
Q: The manufacturer of a new antidepressant claims that, among all people with depression who use the…
A: The random variable is people who find relief from depression. The population proportion is 65%. The…
Q: Can I use CRONBACH’S ALPHA in testing the reliability of the device? How?
A: CRONBACH's Alpha: It is a measure of internal consistency. Cronbach alpha can be considered as a…
Q: A large p-value indicates that the data is consistent with the alternative hypothesis. True or…
A: The p-value is the likelihood of obtaining the value of sample statistic which would be as extreme…
Q: In experimental situations, care is taken to control for as many factors as possible which might…
A: Spearman rank correlation : The non parametric counterpart of the Pearson product-moment…
Q: a. If a null hypothesis is rejected with a significance level of 0.05, is it also rejected with a…
A: To be reject null hypothesis, p value must be smaller than alpha.
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