Which of the following statements are true 1. The p value is the probability of the sample data arising by chance. 2 the P value is in logical value, designated as the significance level. 3. The p-value is the chance of getting an observed effect in the null hypothesis was false.  4. the p-value is the chance of getting an observed effect in the no hypothesis was true.

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

A: We heed to find null and alternative hypothesis.

Q: According to a recent survey, 70% of college students prefer face-to-face instruction.  A local…

A: Given information: In a recent survey 70% of college students prefer face-to-face instruction. Thus,…

Q: Which of the following is NOT a condition necessary for a hypothesis test about a single population…

A: Given that : Which of the following is NOT a condition necessary for a hypothesis test about a…

Q: In a recent Super Bowl, a TV network predicted that 36 % of the audience would express an interest…

A: State the hypotheses. That is, the proportion of the audience would express an interest in seeing…

Q: 4. The principal of San Miguel National High School claims that the students in her school have…

A: Given: Population mean, μ=115

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

A: Introduction - z-score  z=x-μσwhere ,x=score σ=standard deviation μ=mean

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: The assumption that participant number 3 in the study below never developed the event of interest…

A: The correct option is A) Right censoring.

Q: In the questions that follows, we are conducting many hypothesis tests to test a claim.…

A: a) n = 800, p = 0.05 Expected number of significant results = np =800 × 0.05= 40

Q: Consider the following scenario: • The significance level is 5% • Of all tested hypotheses, 10% are…

A: From the given information, The significance level is 5%. Of all tested hypotheses, 10% are true.…

Q: 5) The managers for a fruit juice facility claim that the standard deviation for the ounces per…

A: We have to find correct hypothesis.

Q: Which of the following is NOT true of the goodness-of-fit test? Choose the correct answer below. O…

A: Correct option B

Q: Which of the following statements, if any, are correct? (1) We have rejected the null hypothesis.…

A:

Q: achieved it - would tell us that the chance of our results being dueto chance in the sample rather…

A: The p value 0.1 indicates that the chance of our results being due to chance in the sample rather…

Q: Suppose the p=value of a test statistic equals 0.02.  Which of the following is true? Accept the…

A:

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

A: Given information: An organization previously reported that average number of hours per week that…

Q: A firm’s manager wishes to determine if the probability that employees visit the firm’s medical…

A: Observed Expected (O-E)^2 (O-E)^2/E 49 40 81 2.025 35 40 25 0.625 32 40 64 1.6 39 40 1 0.025…

Q: 3. It is also referred to as a probability of committing an incorrect decision about the null…

A: For the given statement Select the correct choice

Q: The p-value of a statistical test turns out to be about 2%. Which, if any, of the following MUST be…

A: A hypothesis which is tested for plausible rejection is called the Null Hypothesis (typically…

Q: In a recent Super Bowl, a TV network predicted that 43 % of the audience would express an interest…

A: Consider that p is the true proportion of audience, who would express an interest in seeing one of…

Q: Consider the use of metal detectors in airports to test people for concealed weapons. In essence,…

A: (a) The value of alpha should be 10 percent as the cost of type II error is greater than the cost of…

Q: Select which of the following null and alternative hypotheses are most appropriate for a two-sample…

A: Null Hypothesis: This implies that certain characteristics do not differ from the population. It…

Q: a certain country a newspaper reports that the average salary of a teacher in the country is…

A:

Q: Which of the following statements comparing one-tailed with two-tailed hypothesis tests is correct?…

A: Statement a: Correct.                       Let α be the level of significance,    Then, the…

Q: In determining the Type II error for hypothesis test on mean, which of the following probabilities…

A: The statement is "In determining the Type II error for hypothesis test on mean, which of the…

Q: A professor claims that the distribution of her students' grade in Sociology 101 is as follows; 18%…

A: Consider that pi’s are the proportion of the students’ grade in Sociology for grades A, B, C, D and…

Q: It is claimed that the proportion of high school athletes who go on to play sports in college is…

A: We have given the following interpretation.   A claimed that the proportion of high school athletes…

Q: In hypothesis testing, which of the following/s is/are true? a. rejecting the null might lead to a…

A: Following is the table for Type 1 and Type 2 error :   Null Hypothesis is True Alternate…

Q: Which of the following is an accurate definition for the power of a statistical test? O The…

A: Here we want to know about power of the statistical test.

Q: Which of the following statements is true of nonprobability samples? Group of answer choices In a…

A: Basics: The process of selecting a sample from a population Without using statistical theory. In…

Q: A teacher is comparing the mean study time of his freshmen and senior students. He believes that his…

A:

Q: Construct a null and alternative hypothesis for the following claims. a. "The school's mean GPA…

A: Solution: a. The given claim is “The school’s mean GPA differs from 2.50 GPA”.

Q: Alpha (α) is defined as the chance you are willing to take in mistakenly rejecting a true null…

A: Alpha (α) is defined as the chance you are willing to take in mistakenly rejecting a true null…

Q: In hypothesis testing, the significance level represents the probability of A. committing a Type I…

A:

Q: In hypothesis testing, such as testing the difference between two population proportions, which of…

A: A hypothesis test is decision-making about a population parameter. Here we make decisions based on…

Q: For each of the following situation, write the null hypothesis (?") and the alternative hypothesis…

A: a)   Null Hypothesis: - The mean score for university students from a group of Caribbean countries…

Q: n a right-tailed test, the rejection lies in the ________ tails of distribution. a. Up b. Left c.…

A: Given that  Right tailed test    We know that  For right tailed test , the rejection region lies in…

Q: For which of the following situations would it be appropriate to conduct a hypothesis test for two…

A:

Q: If you use a 0.03 level of significance in a​ (two-tail) hypothesis​ test, what is your decision…

A: Given info: level of significance: α=0.03 Tail of the hypothesis​ test: two-tail   Hypotheses: H0:…

Q: Please use the Standard Normal Table (link on the first page of the quiz) to find the following…

A: Answers are  1.  0.3372 2. 0.8944 3. 0.0166

Q: d. How many animals should be included in the study to repeat the test with the same significance as…

A: (d) Number of cats in the shelter = 100 Number of dogs in the shelter = 50 no of old cats in the…

Q: What is the probability of arriving at the correct decision in the test of hypothesis if the level…

A: α = 0.01  It means the probability of committing Type I error is  0.01 It means not committing this…

Q: Did the subject actually lie? No (did not lie) Yes (did lie) The polygraph test indicated that the…

A:

Q: What is the correct interpretation of the significance level a in a hypothesis test? The probability…

A: The acceptance of Ha when H0 is true is called a Type I error. The probability of committing a type…

Q: ple, let's say that I have the following null hypothesis: "The population mean is equal to 5", and…

A: In you example, the null and alternative hypothesis is: H0:u=5H1:u≠5 Here, your claim is that H0: u…

Q: Suppose we suspect a coin is not fair — we suspect that it has larger chance of getting tails than…

A: Consider that p is the true proportion of occurrence of head.

Q: The coach of a basketball team thinks the referee is using a weighted coin to decide which team gets…

A: The chi-square test is performed to find whether there is any difference between the observed…

Q: 1. Which of the following accurately describes the critical region for a hypothesis test?   a.…

A:

Q: The coach of a basketball team thinks the referee is using a weighted coin to decide which team gets…

A: 1)   Assume that pi’s are the proportion of the heads and tails, respectively. For all i = 1, 2.

Q: A coin-operated drink machine was designed to discharge a mean of 7 ounces of coffee per cup.…

A: The test is about to see whether the true mean discharge of coffee per cup is differs from 7 or not.

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.