Which of following is not true about Type I error? The alpha (a) level False positive Rejecting the null hypothesis when in reality it is true. O Accepting (not rejecting) the null hypothesis when in reality it is false.
Q: If the null hypothesis is rejected at a level of significance of 5%, then in some cases, it could be…
A: We have to find the statement is true or false..
Q: Which of the following is true about rejecting the null hypothesis? there is no association between…
A: Which of the following is true about rejecting the null hypothesis? Select one option p-value is…
Q: A researcher risks making a Type I error any time the null hypothesis is rejected? state the reason?
A: Type I error: The type I error can be defined as the probability of rejecting the null hypothesis…
Q: Researchers at the University of Boston's Children's Hospital and Harvard Medical School analyzed…
A: a null hypothesis of H0: no cancer is present and an alternative hypothesis of Ha: cancer is…
Q: xplain what the following question means: “Does the evidence that we collected make our null…
A: In hypothesis testing, if the p-value is less than the level of significance, the null hypothesis…
Q: Identify the type I error and the type II error that corresponds to the given null hypothesis for a…
A: Type I error (α): The probability of rejecting the null hypothesis when it is actually true is…
Q: then the researcher made (a) _______. A.Type I error B.Type II error C.No error
A: Here given researcher has a hypothesis that boys receive more allowance than girls. After…
Q: A type I error could be committed even if the null hypothesis is false O True O False
A: The provided statement is "false" because Type I error refers to rejecting the null hypothesis when…
Q: Lisa wants to determine if graduates from her collegeearn different incomes than do graduates from…
A: Let μ denotes the population mean income of the graduates from Lisa's college. The average income is…
Q: If we fail to reject the null hypothesis when the null hypothesis is true, we have made a O type B…
A: Solution
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: The strength of evidence in support of a null hypothesis is measured by a) Z-score b) Type 1 error…
A: We have to find correct answer for hypothesis...
Q: An airline wants to test the null hypothesis that 60percent of its passengers object to smoking…
A:
Q: A very small p-value is strong evidence for the Ha (Alternative Hypothesis). Select one: True False
A:
Q: Microsort is a genetics company that advertises a product that supposedly increases the chance of a…
A: Given; H0:the product does not work.Ha:the product does works. The correct option is C which is-…
Q: In a random sample of 400 residents, 220 support a 0.3% sales tax increase to build a new high…
A: The hypothesized proportion is 0.50.
Q: You run a test of independence between variable A and variable B and you find the probability your…
A: It is given that the p-value is 0.009.
Q: Identify the type I error and the type II error that corresponds to the given hypothesis. The…
A: Type I Error : Reject H0 when H0 is true. Type II Error : Fail to reject H0 when H0 is false. Here,…
Q: Which hypothesis test has the greatest power? a. t-test with a 90% chance of rejecting H0 b.…
A:
Q: Which of the following is an accurate definition of a type 2 error? rejecting a false null…
A: type 2 error : type II error is the non-rejection of a false null hypothesis
Q: Which of following is true about Type I error? O The alpha (x) level False negative Rejecting the…
A:
Q: Dreamfilms Studios boasts that its summer features are so good that at least half of all tickets…
A: Claim :- Less than half of all tickets sold are for Dreamfilms movies. Final Decision is Fail to…
Q: Which of the following is an accurate definition of a Type I error? A.) Rejecting a false null…
A: Answer - Which of the following is an accurate definition of a Type I error?
Q: The alpha value represents the probability of: making a type II error. making a type I error. O my…
A: The alpha (α) is also known as the level of significance.
Q: Explain what the following question means: “Does the evidence that we collected make our null…
A: If there is evidence which makes null hypothesis look ridiculous then we reject the null hypothesis…
Q: Which of the following relates to the rejection of the null hypothesis when it is actually true? 1.…
A: Answer: Type I Error Type I Error is also calculated as, α=P{ Reject Ho when it is true}=P{ Reject…
Q: An education researcher claims that 62% of college students work year-round. In a random sample…
A:
Q: A teacher giving a true/false test wants to make sure her students do better than they would if they…
A: It is given that the level of significance is 0.10.
Q: A health organization has been concerned with the birth weights of newborns. They offered a program…
A: H0: mean = 5.75 Ha: mean > 5.75
Q: An education researcher claims that 57% of college students work year-round. In a random sample of…
A: Given information
Q: hich of the following is the value necessary for rejection (or nonacceptance) of the null…
A: The critical value represents the region where the test statistic is unlikely to fall/occur.
Q: A previous student of this class was curious about the relationship between number of hours a person…
A: Solution: Given data
Q: Identify the type I error and the type II error that corresponds to the given hypothesis. The…
A: Given : Claim : The proportion of people who write with their left hand is equal to 0.23 Hypothesis:…
Q: In a random sample of 400 residents, 220 support a 0.3% sales tax increase to build a new high…
A: Hey, since there are multiple subparts posted, we will answer first three question. If you want any…
Q: Can the null hypothesis be rejected at the; i. 0.01 level of significance? ii. 0.05 level of…
A: To decide whether the null hypothesisbis rejected or not, we compare p-value and level of…
Q: If the decision rule for a one-tailed test of hypothesis is given as: Reject Ho if z<-2.36. What…
A: The decision rule for a one-tailed test of hypothesis is given as: Reject Ho if z<-2.36 The value…
Q: An automobile manufacturer claims that the average gas mileage of a new model is 35 miles per gallon…
A: Correct answer is (D)
Q: Are you an impulse shopper? A survey of 600 grocery shoppers indicated that 62% of males and 51% of…
A:
Q: According to a reputable magazine, 32% of all cars sold in a certain country are SUVS. Suppose a…
A:
Q: A 2011 survey, by the Bureau of Labor Statistics, reporte that 91% of Americans have paid leave. In…
A: Type I Error : Type I Error occurs if we reject true null hypothesis. Type II Error : Type II…
Q: Identify the type I error and the type Il error that corresponds to the given hypothesis. The…
A:
Q: What values of F indicate that the null hypothesis is true?
A: F-values are calculated value
Q: Suppose that you are interested in testing a joint null hypothesis consisting of three restrictions,…
A: Assuming a large sample size, the probability that t-statistics exceeds 1.96 is 0.05 Probability of…
Q: Records from a toy manufacturing company showed that the mean time that the top-selling toy captured…
A: The random variable time follows normal distribution. We have to write the hypotheses. This is one…
Q: The study shows that for lung cancer, less than 5% of patients were cured in Denmark and Poland,…
A: Let p be the population proportion of patients were cured in Spain Given p=10%=0.10
Q: When is a researcher at risk of making a type 2 error? whenever H0 is rejected whenever H1 is…
A: When is a researcher at risk of making a type 2 error? A type II error that describes the error…
Q: When asked what it means for the result of a hypothesis test to be practically significant (or…
A:
Q: Identify the type I error and the type Il error that corresponds to the given hypothesis. The…
A: Solution: a. State the hypotheses. Null hypothesis: H0:p=0.27 That is, the proportion of people who…
Q: A software company advertises that its software can improve students' grades by at least 15%. One…
A: Types of errors: Rejecting a true null hypothesis is called a Type I error. Failing to reject a…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
- Under alpha 0.05 should you reject or retain the null hypothesisYou complete a hypothesis test using alpha = .05 and based on the evidence from the sample, your decision is to fail to reject the null hypothesis. If the treatment actually does have an effect, which of the following is true?About half of the police officers in Baltimore, Maryland, have completed a special course in community policing. As Captain of your division, you want to know if the course increased calls from the minority community for assistance from your precinct. Below is the results of before and after training in proportions for calls from the minority community in your precinct. Be sure and state whether you accept or reject the null hypothesis. Alpha is 0.05 for setting your Z critical value. After Training Before training Ps1 = 0.47 Ps2 = 0.43 N1 = 157 N2 = 113
- Using the information provided in the SPSS output. You are asked to make a decision about whether to reject the null hypothesis that the population value of gamma equals 0 (i.e., that there is no ordinary association in the population between frequency of prayer and health). If alpha = 0.05 and you use a non-directional alternative hypothesis, which of the following is true?) A. Since the p-value is larger than alpha, you do not reject the null hypothesis B. Since the p-value is less than alpha, you do not reject the null hypothesis C. Since the p-value is larger than alpha, you reject the null hypothesis. D. Since the p-value is less than alpha, you reject the null hypothesis1.Distinguish p-value from alpha. 2. Which of the following alpha values provides the strongest evidence the reject the null hypothesis? a. 5%b. 1%c. 0.01% 3. Which approach measures the strength of the evidence against the null hypothesis, the p-value approach or the critical value approach?In a local community past data shows that 17% of the residents own a skateboard, and the city is considering building more green lanes to accommodate these skate boarders as a recent survey showed that 63 out of 270 people supported the concept of more green lanes on the city's streets. a) State the null and alternative hypothesis. b) Find a Z and P-value, and state your conclusion using alpha = 5% c) Re-do part (b) using the Chi-square test, also stating your conclusion using alpha = 5%
- Data from the 2014 General Social Survey (GSS) show that out of n=1,606 adult respondents, the proportion who reported having voted for Barack Obama in the 2008 presidential election was 0.61 Q: If I calculate a z test static of 4.84, and my alpha = 0.05, what decision should I make about the hypothesis? (Calculate the p-value for a 2-sided test to make your decision.) Options: A: fail to reject the null hypothesis that the proportion of American adults who voted for Obama in 2008 was 0.55 B: reject the null hypothesis that the proportion of American adults who voted for Obama in 2008 was 0.55 C: Reject the alternative hypothesis that the proportion of American Adults who voted for Obama in 2008 was not equal to 0.55 D: Fail to reject the alternative hypothesis that the proportion of American adults who voted for Obama in 2008 was not equal to 0.55A fisheries biologist collected a random sample of fish from a lake and conducted a chi-square goodness-of-fit test to see if the distribution of fish changed over time. The table below shows the distribution of fish that were put into the lake when it was originally stocked. Fish Type Trout Bass Perch Sunfish Catfish Percent 25% 25% 20% 15% 15% The biologist found evidence to reject the null hypothesis in favor of the alternative hypothesis. Which of the following represents the alternative hypothesis of the test?If the researcher has set the alpha for the test described in Question #6 and #7 at .05, they should: Group of answer choices abandon their research question reject the null hypothesis fail to reject the null hypothesis try again with a different alpha
- For question #2, identify the null hypothesis (Ho) from choices given. For question #3 give just your calculated z-value that you are going to use to make a decision on the null hypothesis. For question #4, answer True or False as to whether the null hypothesis is rejected.Method A: M1= 54, SS1= 400, n1= 15 Method B: M2=40, SS2= 440, n2=15 Using alpha=0.05 should the null hypothesis by rejected for the above data?Consider the following: In general, when people diet they typically lose 10 lbs. (?σ = 2). A random sample of 16 people on the keto diet lost 15 lbs. Do people on the keto diet lose more or less weight than people on diets in general? 3. What is the Null Hypothesis? a)On average, weight loss in the keto diet sample does not differ from weight loss in the population of dieters in general. (H0: X-bar = Mu)) b)On average, weight loss in the keto diet sample does not differ from weight loss in the population of dieters in general. (H0: X-bar does not equal Mu) c)On average, weight loss in the keto diet sample differs from weight loss in the population of dieters in general. (H0: X-bar does not equal Mu) d)On average, weight loss in the keto diet sample differs from weight loss in the population of dieters in general. (H0: X-bar = Mu)