Evaluate the significance of the p-value. You can think of the p-value as the probability that the null hypothesis is true. A value greater than 0.05 indicates that in more than 1 in 20 (or more than 5%) repetitions of an experiment of the same size, the observed deviation from predicted valuescould have been obtained by chance, even if the null hypothesis is actually true; the data are therefore not significant for rejecting the null hypothesis. Statisticians have arbitrarily selected the 0.05 p-value as the boundarybetween rejecting or not rejecting the null hypothesis. A p-value of less than 0.05 means that you can consider the deviation to be significant, and you can reject the null hypothesis.

Q: You are researching a newly developed drug that you believe has better efficacy than the standard…

A: Introduction: The standard drug can effectively relieve symptoms in 70% of affected patients. The…

Q: Consider a hypothesis test of the claim that following a particular diet reduces the likelihood of…

A: Here we consider a hypothesis test of the claim that following a particular diet reduces the…

Q: Consider the following scenario: The statistical power is 20% The significance level is 5% Of all…

A: Given the scenario The statistical power is 20% The significance level is 5% Of all tested…

Q: pothesis test produces a p-value of 1.5%. Which of the following are DEFINITELY true? Check nswers…

A: First and second option is correct The test is statistically significant.   The alternative…

Q: In a two-tail test for the population proportion, if the null hypothesis is rejected when the…

A: In a two-tail test for the population proportion, if the null hypothesis is rejected when the…

Q: Test the claim that the proportion of men who own cats is significantly different than the…

A: The given data is as follows:Significance level, MenSample size, Sample proportion of men who own…

Q: A researcher expects a treatment to increase the scores for individuals in a population. The…

A: The objective of the question is to determine the statistical decision based on the result of a…

Q: You toss a coin 80 times and get many more heads than expected. With a computer, you determine that…

A: n=80, P^=Observed probability of getting heads out of 80 tosses. If the coin is fair, p0=0.5 i.e.…

Q: If you conduct a hypothesis test every so often at a 95% level, about what fraction of the time do…

A:

Q: Russell says he is willing to accept a 5% chance of making a Type I error in this study. What is the…

A: Russell says he is willing to accept a 5% chance of making a Type I error in this study. so…

Q: In a hypothesis test, the Type I error rate is set to a = 0.10. When the null hypothesis is false,…

A: Type I error: In hypothesis testing the Type I error is said to be committed when true null…

Q: Test the claim that the mean GPA of night students is significantly different than 2.8 at the 0.01…

A:

Q: The purpose of this problem is to interpret a P-value correctly. 1 True False If P-value = 7%, then…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Test the claim that the mean GPA of night students is significantly different than 2.2 at the U.02…

A:

Q: Chi-square tests are used to test relationships between categorical or ordinal values - to determine…

A: In the given problem we have, Chi-square tests are used to test relationships between categorical or…

Q: Test the claim that the proportion of men who own cats is significantly different than 20% at the…

A: The given data is as follows:Significance level, Sample size,  Sample proportion,

Q: A researcher is testing the effect preschool has on the development of young children mothers more…

A:

Q: Which of the following is the name for the statistical hypothesis that describes an outcome of some…

A: The question is asking for the term that describes a statistical hypothesis that represents a change…

Q: If the alpha level for a hypothesis test is .05, you _____ the null hypothesis when the probability…

A: We have given that the fill in the blanks about the hypothesis testing.

Q: A manufacturing company regularly consumes a special type of glue purchased from a foreign supplier.…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: Suppose that you want to perform a hypothesis test based on independent random samples to compare…

A: a)Requirements for a pooled t-test:The samples must be independent and drawn randomly from normally…

Q: When we are conducting a two-tailed hypothesis test for a proportion, if the test statistic Z =…

A: Given information: The test is a two-tailed test. The value of the test statistic is Z=0.94.

Q: Test the claim that the mean GPA of night students is significantly different than 2 at the 0.01…

A: Claim is gpa is significantly different than 2. n=75, x^=2.03, s=0.08 α=0.01

Q: A hypothesis test has a type I error of 2%. Assume that the null hypothesis is true.You run the test…

A: Given, P(Type I error)=0.02 i.e p=P(Rejecting a true null hypothesis)=0.02 The test is run twice…

Q: Which of the following is true about Type Il error? a. The probability of type Il error is equal to…

A: Type II Error ; Fail to reject H0 when H0 is false.

Q: can you reject the null hypothesis with 95% confidence?   Question 14 options:   yes   no   it…

A: It is given that  p-value = 0.06 Confidence level = 95%

Q: In Exercises, we have given the value obtained for the test statistic, z, in a one-mean z-test. We…

A: a)P-value:Here, z= –1.84.

Q: (d) Decide whether to reject or fail to reject the null hypothesis. Choose the correct answer below.…

A: Given that  Sample sizes n1=200 , n2=250 Sample proportion p1^=0.37 , p2^=0.49

Q: In an experiment with a significance level set at 1%, and assuming the null hypothesis is true, what…

A: Type 1 error is rejecting the null hypothesis H0 when it is true. The probability of committing a…

Q: Test the claim that the proportion of men who own cats is significantly different than 40% at the…

A: Given that  Claim : The proportion of men who owns cats is significantly different than 40%…

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

A:

Q: a hypothesis is performed to test the claim that a population is greater than 0.7.  Find the…

A: Given: p = 0.7 n = 50 ∝ = 0.05 Thus, Z∝/2 = 1.645.   (From normal table) We have, Mean = p = 0.7 p1…

Q: Which of the following is the name for the statistical hypothesis that describes an outcome of some…

A: The question is asking for the term that describes a statistical hypothesis that represents a change…

Q: Suppose you conduct 17 independent hypothesis tests each at the 8% significance level. Assume that…

A: Given that,Significance level  = 8% = 0.08Probability of making type I error = 0.08

Q: Test the claim that the proportion of men who own cats is significantly different than the…

A: Given: For men: n1 = 40 p1 = 0.45 For women: n2 = 40 p2 = 0.65 Formula Used: Test-statistic Z =…

Q: Suppose a hypothesis test was performed with a level of significance of 0.05. Then if the null…

A: Level of significance is the type 1 error which is rejecting the true Null Hypothesis.  So here the…

Q: Suppose that you want to perform a hypothesis test based on independent random samples to compare…

A: a).It is given that the distributions of the variables are normal but do not have the same shape.…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.