If the null hypothesis is rejected at a level of significance of 5%, then in some cases, it could be accepted at a level of significance of 1%. * O True False

Q: True or False  In a hypothesis testing, if the p-value is less than the significance level a, we do…

A: Significance level: It is the proability of rejecting the null hypothesis when it is true. p-value:…

Q: In a hypothesis test, the test statistic computed from the sample data is considered extreme or…

A: A test statistic is a random variable that is calculated from sample data and used in a hypothesis…

Q: The average amount of money lost by a casino patron is below $500. Determine if the hypothesis…

A: Here we need to find whether the given claim is null or alternative.

Q: writing an appropriate null and alternative hypothesis

A: here use basic of hypothesis testing

Q: 3. Given the null hypothesis, "The mean age of the patients in a hospital is equal to 26", state the…

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

A: Type I error: The probability of rejecting the null hypothesis when it is actually true.

Q: 4) In the p-value approach, if p-value>a (the level of significance) we reject the null hypothesis.…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: When a null hypothesis is rejected, the test is said to be "statistically significant." If a…

A: Here Given  When a null hypothesis is rejected, test is said to be "statistically significant

Q: Imagine that a researcher appropiately rejects a null hypothesis (with that null hypothesis stating…

A: The null hypothesis is a definite statement about the population parameter that there is no…

Q: Past studies have indicated that the percentage of smokers was estimated to be about 35%. Given the…

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Q: The mean number of rushing yards for one NFL team was less than 99 yards per game. If a hypothesis…

A: Given information Hypothesized mean µ = 99 yards We have to test the claim that the mean number of…

Q: 20. In statistical notion, what is your null hypothesis?

A: Given that  Sample size n =7 The null hypothesis H0.

Q: As of 2012, the proportion of students who use a MacBook as their primary computer is 0.31. You…

A:

Q: The probability of rejecting a false null hypothesis is called?

A: We know that the power is defined as  Power:  Power is the probability of the rejecting the null…

Q: what does failing to rejectthe null hypothesis mean?

A: First, it is possible that the effect truly doesn’t exist in the population, which is why the…

Q: The level of significance is the probability of rejecting the null hypothesis 9) when the null…

A: The significance level is the probability of rejecting the null hypothesis when it is true.

Q: A school administrator claims that the mean IQ of all the students in their school is 126. A…

A: Type 1 error is  error committed in taking a wrong decision to reject the null hypothesis when it is…

Q: 10) The mean age of bus drivers in Chicago is 48.7 years. If a hypothesis test is performed, how…

A: Denote μ as the population mean age of bus drivers.

Q: A hypothesis test is conducted with a level of significance of  10%  and the resulting  p  value is…

A:

Q: Suppose that you did a Right-Tailed Test and that you Rejected the Null Hypothesis. Which is bigger,…

A: Decision Rule: For right tailed test, If the test statistic is greater than the critical value, then…

Q: tp denote the true proportion of packages that are delivered as advertised. Set up hypotheses for…

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Q: If a hypothesis is not rejected at the 5% level of significance, it will also not be rejected at the…

A: Concept of p-value: The p-value in hypothesis testing is the probability of obtaining a test…

Q: In a hypothesis test, the likelihood of rejecting the null hypothesis is independent of the sample…

A: Introduction: In a hypothesis testing problem, the decision regarding rejection/ failure of…

Q: The term error is used in two different ways in hypothesis testing: a Type I error (or Type II) and…

A: A) Standard error can be decreased by increasing the sample size. Changes in sample size have no…

Q: In 2001, the average proportion of the people with a cell phone was 34%. Has that proportion…

A:

Q: In ANOVA, the null hypothesis is

A: We want to tell you null hypothesis in anova

Q: State two reasons why including the P-value is prudent when you are reporting the results of a…

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Q: Suppose a sample size of 103 was used to conduct a left tailed hypothesis test for a single…

A: Given Information:  Sample size (n) = 103  Hypothesis: Ho: u = 22  p-value = 0.04

Q: the non-directional null hypothesis? What is the alternative hypothesis?

A: Hypothesis in statistics are the statements which need to be tested on the basis of the observed…

Q: What would it mean to a hypothesis test if we increased or decreased the p-value? Why might someone…

A:

Q: Is it commonly believed that the mean body temperature of a healthy adult is 98.6f you are not…

A: Solution: From the given information, the claim is that the mean body temperature of a healthy adult…

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

A: A type 1 error occurs when a researcher rejects the true null hypothesis, if the significance level…

Q: true or false: If the p value of a statistical test is greater than 90% then this would support…

A: p-value: In general, the p-value is also called as probability value. The p-value is the probability…

Q: why must we be required to deal with uncertainty in our decisions, even when using statistical…

A: Hypothesis Testing :  Hypothesis testing is an act in statistics whereby an analyst tests an…

Q: What are examples of a null and research hypothesis?

A: In a hypothesis test, Null and Alternate hypothesis are mutually exclusive ( both can not be true at…

Q: State why a non-significant outcome does not mean the null hypothesis is probably true?

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Q: Suppose you are asked to conduct a two-tailed hypothesis test on the population mean. What type of…

A: Here we want to conduct two tailed hypothesis test for mean

Q: An advertising executive wants to determine if a new billboard placed in a city caused sales of…

A: Given that we need to test to determine if a new billboard played in a city caused sales of their…

Q: The level of significance is the probability of rejecting the null hypothesis when the null…

A: Given two statements , we need to state whether it is true / false

Q: Which provides stronger evidence against the null hypothesis, a P-value of 0.02 or a P-value of…

A: Decision criterion:If the p-value of the test is less than or equal to the level of significance,…

Q: A shopkeeper wonders if number of their female and male customers are equal or not. They count the…

A:

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: With the null hypothesis that a suspect is innocent, an investigation concluded that the suspect…

A: The probability of determining a test statistic value at least as extreme as the observed value…

Q: A research company wants to determine whether there is a difference in effectiveness of a brand-…

A:

Q: What does it mean for the results of a hypothesis test to be statistically significant?

A: f we reject the null hypothesis it mean our hypothesis test to be statistically significant.

Q: Test the claim that the proportion of men who own cats is smaller than 40% at the .005 significance…

A:

Q: A newspaper publisher believes that over 47% of their readers own a Rolls Royce. For marketing…

A: Given information- Population proportion, p = 0.47 Significance level, α = 0.02 We have to test the…

Q: If the null hypothesis (3:5:2) is true, determine the expected number of students that score A, B…

A: a) If the Null Hypothesis is true which means the ratio of grades is valid Then, Expected Values…

Q: If the p-value is 0.003 and the level of significance, α, is 0.05 in a hypothesis test for a mean,…

A: Given,  p-value is 0.003 α, is 0.05 Here p-value less than α. Therefore this test is significant and…

Q: Explain why accepting the null hypothesis is not a possible outcome.

A: Hypothesis:- A statistical hypothesis is some assumption or claim about the population.

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.